- Fix CVE-2023-38802
- bfdd: remove profiles when removing bfd node
This commit is contained in:
parent
5788752ec0
commit
45da74035f
117
SOURCES/0014-bfd-profile-crash.patch
Normal file
117
SOURCES/0014-bfd-profile-crash.patch
Normal file
@ -0,0 +1,117 @@
|
||||
From 4b793d1eb35ab5794db12725a28fcdb4fef23af7 Mon Sep 17 00:00:00 2001
|
||||
From: Igor Ryzhov <iryzhov@nfware.com>
|
||||
Date: Thu, 1 Apr 2021 15:29:18 +0300
|
||||
Subject: [PATCH] bfdd: remove profiles when removing bfd node
|
||||
|
||||
Fixes #8379.
|
||||
|
||||
Signed-off-by: Igor Ryzhov <iryzhov@nfware.com>
|
||||
---
|
||||
bfdd/bfd.c | 8 ++++++++
|
||||
bfdd/bfd.h | 1 +
|
||||
bfdd/bfdd_nb_config.c | 1 +
|
||||
3 files changed, 10 insertions(+)
|
||||
|
||||
diff --git a/bfdd/bfd.c b/bfdd/bfd.c
|
||||
index c966efd8ea71..cf292a836354 100644
|
||||
--- a/bfdd/bfd.c
|
||||
+++ b/bfdd/bfd.c
|
||||
@@ -1889,6 +1889,14 @@ void bfd_sessions_remove_manual(void)
|
||||
hash_iterate(bfd_key_hash, _bfd_session_remove_manual, NULL);
|
||||
}
|
||||
|
||||
+void bfd_profiles_remove(void)
|
||||
+{
|
||||
+ struct bfd_profile *bp;
|
||||
+
|
||||
+ while ((bp = TAILQ_FIRST(&bplist)) != NULL)
|
||||
+ bfd_profile_free(bp);
|
||||
+}
|
||||
+
|
||||
/*
|
||||
* Profile related hash functions.
|
||||
*/
|
||||
diff --git a/bfdd/bfd.h b/bfdd/bfd.h
|
||||
index af3f92d6a8f8..9ee1da728717 100644
|
||||
--- a/bfdd/bfd.h
|
||||
+++ b/bfdd/bfd.h
|
||||
@@ -596,6 +596,7 @@ void bfd_session_free(struct bfd_session *bs);
|
||||
const struct bfd_session *bfd_session_next(const struct bfd_session *bs,
|
||||
bool mhop);
|
||||
void bfd_sessions_remove_manual(void);
|
||||
+void bfd_profiles_remove(void);
|
||||
|
||||
/**
|
||||
* Set the BFD session echo state.
|
||||
diff --git a/bfdd/bfdd_nb_config.c b/bfdd/bfdd_nb_config.c
|
||||
index 0046bc625b45..77f8cbd09c07 100644
|
||||
--- a/bfdd/bfdd_nb_config.c
|
||||
+++ b/bfdd/bfdd_nb_config.c
|
||||
@@ -203,6 +203,7 @@ int bfdd_bfd_destroy(struct nb_cb_destroy_args *args)
|
||||
|
||||
case NB_EV_APPLY:
|
||||
bfd_sessions_remove_manual();
|
||||
+ bfd_profiles_remove();
|
||||
break;
|
||||
|
||||
case NB_EV_ABORT:
|
||||
diff --git a/bfdd/bfdd_nb_config.c b/bfdd/bfdd_nb_config.c
|
||||
index 77f8cbd09c07..4030e2eefa50 100644
|
||||
--- a/bfdd/bfdd_nb_config.c
|
||||
+++ b/bfdd/bfdd_nb_config.c
|
||||
@@ -186,7 +186,15 @@ static int bfd_session_destroy(enum nb_event event,
|
||||
*/
|
||||
int bfdd_bfd_create(struct nb_cb_create_args *args)
|
||||
{
|
||||
- /* NOTHING */
|
||||
+ if (args->event != NB_EV_APPLY)
|
||||
+ return NB_OK;
|
||||
+
|
||||
+ /*
|
||||
+ * Set any non-NULL value to be able to call
|
||||
+ * nb_running_unset_entry in bfdd_bfd_destroy.
|
||||
+ */
|
||||
+ nb_running_set_entry(args->dnode, (void *)0x1);
|
||||
+
|
||||
return NB_OK;
|
||||
}
|
||||
|
||||
@@ -202,6 +210,12 @@ int bfdd_bfd_destroy(struct nb_cb_destroy_args *args)
|
||||
return NB_OK;
|
||||
|
||||
case NB_EV_APPLY:
|
||||
+ /*
|
||||
+ * We need to call this to unset pointers from
|
||||
+ * the child nodes - sessions and profiles.
|
||||
+ */
|
||||
+ nb_running_unset_entry(args->dnode);
|
||||
+
|
||||
bfd_sessions_remove_manual();
|
||||
bfd_profiles_remove();
|
||||
break;
|
||||
diff --git a/bfdd/bfdd_cli.c b/bfdd/bfdd_cli.c
|
||||
index b64e36b36a44..5a844e56e121 100644
|
||||
--- a/bfdd/bfdd_cli.c
|
||||
+++ b/bfdd/bfdd_cli.c
|
||||
@@ -486,7 +486,7 @@ void bfd_cli_show_echo_interval(struct vty *vty, struct lyd_node *dnode,
|
||||
* Profile commands.
|
||||
*/
|
||||
DEFPY_YANG_NOSH(bfd_profile, bfd_profile_cmd,
|
||||
- "profile WORD$name",
|
||||
+ "profile BFDPROF$name",
|
||||
BFD_PROFILE_STR
|
||||
BFD_PROFILE_NAME_STR)
|
||||
{
|
||||
diff --git a/vtysh/vtysh.c b/vtysh/vtysh.c
|
||||
index 74f13e1a44e8..cf1811bb1f2f 100644
|
||||
--- a/vtysh/vtysh.c
|
||||
+++ b/vtysh/vtysh.c
|
||||
@@ -1959,7 +1959,7 @@ DEFUNSH(VTYSH_BFDD, bfd_peer_enter, bfd_peer_enter_cmd,
|
||||
}
|
||||
|
||||
DEFUNSH(VTYSH_BFDD, bfd_profile_enter, bfd_profile_enter_cmd,
|
||||
- "profile WORD",
|
||||
+ "profile BFDPROF",
|
||||
BFD_PROFILE_STR
|
||||
BFD_PROFILE_NAME_STR)
|
||||
{
|
||||
128
SOURCES/0015-CVE-2023-38802.patch
Normal file
128
SOURCES/0015-CVE-2023-38802.patch
Normal file
@ -0,0 +1,128 @@
|
||||
From bcb6b58d9530173df41d3a3cbc4c600ee0b4b186 Mon Sep 17 00:00:00 2001
|
||||
From: Donatas Abraitis <donatas@opensourcerouting.org>
|
||||
Date: Thu, 13 Jul 2023 22:32:03 +0300
|
||||
Subject: [PATCH] bgpd: Use treat-as-withdraw for tunnel encapsulation
|
||||
attribute
|
||||
|
||||
Before this path we used session reset method, which is discouraged by rfc7606.
|
||||
|
||||
Handle this as rfc requires.
|
||||
|
||||
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
|
||||
---
|
||||
bgpd/bgp_attr.c | 61 ++++++++++++++++++++-----------------------------
|
||||
1 file changed, 25 insertions(+), 36 deletions(-)
|
||||
|
||||
diff --git a/bgpd/bgp_attr.c b/bgpd/bgp_attr.c
|
||||
index dcf0f4d47cfb..8c53191d680f 100644
|
||||
--- a/bgpd/bgp_attr.c
|
||||
+++ b/bgpd/bgp_attr.c
|
||||
@@ -1301,6 +1301,7 @@ bgp_attr_malformed(struct bgp_attr_parser_args *args, uint8_t subcode,
|
||||
case BGP_ATTR_LARGE_COMMUNITIES:
|
||||
case BGP_ATTR_ORIGINATOR_ID:
|
||||
case BGP_ATTR_CLUSTER_LIST:
|
||||
+ case BGP_ATTR_ENCAP:
|
||||
return BGP_ATTR_PARSE_WITHDRAW;
|
||||
case BGP_ATTR_MP_REACH_NLRI:
|
||||
case BGP_ATTR_MP_UNREACH_NLRI:
|
||||
@@ -2434,26 +2435,21 @@ bgp_attr_ipv6_ext_communities(struct bgp_attr_parser_args *args)
|
||||
}
|
||||
|
||||
/* Parse Tunnel Encap attribute in an UPDATE */
|
||||
-static int bgp_attr_encap(uint8_t type, struct peer *peer, /* IN */
|
||||
- bgp_size_t length, /* IN: attr's length field */
|
||||
- struct attr *attr, /* IN: caller already allocated */
|
||||
- uint8_t flag, /* IN: attr's flags field */
|
||||
- uint8_t *startp)
|
||||
+static int bgp_attr_encap(struct bgp_attr_parser_args *args)
|
||||
{
|
||||
- bgp_size_t total;
|
||||
uint16_t tunneltype = 0;
|
||||
-
|
||||
- total = length + (CHECK_FLAG(flag, BGP_ATTR_FLAG_EXTLEN) ? 4 : 3);
|
||||
+ struct peer *const peer = args->peer;
|
||||
+ struct attr *const attr = args->attr;
|
||||
+ bgp_size_t length = args->length;
|
||||
+ uint8_t type = args->type;
|
||||
+ uint8_t flag = args->flags;
|
||||
|
||||
if (!CHECK_FLAG(flag, BGP_ATTR_FLAG_TRANS)
|
||||
|| !CHECK_FLAG(flag, BGP_ATTR_FLAG_OPTIONAL)) {
|
||||
- zlog_info(
|
||||
- "Tunnel Encap attribute flag isn't optional and transitive %d",
|
||||
- flag);
|
||||
- bgp_notify_send_with_data(peer, BGP_NOTIFY_UPDATE_ERR,
|
||||
- BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR,
|
||||
- startp, total);
|
||||
- return -1;
|
||||
+ zlog_err("Tunnel Encap attribute flag isn't optional and transitive %d",
|
||||
+ flag);
|
||||
+ return bgp_attr_malformed(args, BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
|
||||
+ args->total);
|
||||
}
|
||||
|
||||
if (BGP_ATTR_ENCAP == type) {
|
||||
@@ -2461,12 +2457,11 @@ static int bgp_attr_encap(uint8_t type, struct peer *peer, /* IN */
|
||||
uint16_t tlv_length;
|
||||
|
||||
if (length < 4) {
|
||||
- zlog_info(
|
||||
+ zlog_err(
|
||||
"Tunnel Encap attribute not long enough to contain outer T,L");
|
||||
- bgp_notify_send_with_data(
|
||||
- peer, BGP_NOTIFY_UPDATE_ERR,
|
||||
- BGP_NOTIFY_UPDATE_OPT_ATTR_ERR, startp, total);
|
||||
- return -1;
|
||||
+ return bgp_attr_malformed(args,
|
||||
+ BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
|
||||
+ args->total);
|
||||
}
|
||||
tunneltype = stream_getw(BGP_INPUT(peer));
|
||||
tlv_length = stream_getw(BGP_INPUT(peer));
|
||||
@@ -2496,13 +2491,11 @@ static int bgp_attr_encap(uint8_t type, struct peer *peer, /* IN */
|
||||
}
|
||||
|
||||
if (sublength > length) {
|
||||
- zlog_info(
|
||||
- "Tunnel Encap attribute sub-tlv length %d exceeds remaining length %d",
|
||||
- sublength, length);
|
||||
- bgp_notify_send_with_data(
|
||||
- peer, BGP_NOTIFY_UPDATE_ERR,
|
||||
- BGP_NOTIFY_UPDATE_OPT_ATTR_ERR, startp, total);
|
||||
- return -1;
|
||||
+ zlog_err("Tunnel Encap attribute sub-tlv length %d exceeds remaining length %d",
|
||||
+ sublength, length);
|
||||
+ return bgp_attr_malformed(args,
|
||||
+ BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
|
||||
+ args->total);
|
||||
}
|
||||
|
||||
/* alloc and copy sub-tlv */
|
||||
@@ -2550,13 +2543,10 @@ static int bgp_attr_encap(uint8_t type, struct peer *peer, /* IN */
|
||||
|
||||
if (length) {
|
||||
/* spurious leftover data */
|
||||
- zlog_info(
|
||||
- "Tunnel Encap attribute length is bad: %d leftover octets",
|
||||
- length);
|
||||
- bgp_notify_send_with_data(peer, BGP_NOTIFY_UPDATE_ERR,
|
||||
- BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
|
||||
- startp, total);
|
||||
- return -1;
|
||||
+ zlog_err("Tunnel Encap attribute length is bad: %d leftover octets",
|
||||
+ length);
|
||||
+ return bgp_attr_malformed(args, BGP_NOTIFY_UPDATE_OPT_ATTR_ERR,
|
||||
+ args->total);
|
||||
}
|
||||
|
||||
return 0;
|
||||
@@ -3396,8 +3386,7 @@ enum bgp_attr_parse_ret bgp_attr_parse(struct peer *peer, struct attr *attr,
|
||||
case BGP_ATTR_VNC:
|
||||
#endif
|
||||
case BGP_ATTR_ENCAP:
|
||||
- ret = bgp_attr_encap(type, peer, length, attr, flag,
|
||||
- startp);
|
||||
+ ret = bgp_attr_encap(&attr_args);
|
||||
break;
|
||||
case BGP_ATTR_PREFIX_SID:
|
||||
ret = bgp_attr_prefix_sid(&attr_args);
|
||||
@ -7,7 +7,7 @@
|
||||
|
||||
Name: frr
|
||||
Version: 7.5.1
|
||||
Release: 7%{?checkout}%{?dist}
|
||||
Release: 7%{?checkout}%{?dist}.2.alma.1
|
||||
Summary: Routing daemon
|
||||
License: GPLv2+
|
||||
URL: http://www.frrouting.org
|
||||
@ -53,6 +53,11 @@ Patch0010: 0010-moving-executables.patch
|
||||
Patch0011: 0011-reload-bfd-profile.patch
|
||||
Patch0012: 0012-graceful-restart.patch
|
||||
Patch0013: 0013-CVE-2022-37032.patch
|
||||
# Patches were taken from upstream and modified to apply cleanly:
|
||||
# https://git.almalinux.org/rpms/frr/raw/commit/7599d0ae96d0c1d1f42ae62e1f885ee58ed5b0cd/SOURCES/0010-CVE-2023-38802.patch
|
||||
Patch0014: 0014-bfd-profile-crash.patch
|
||||
# https://gitlab.com/redhat/centos-stream/rpms/frr/-/blob/7e4d5613074b57d55f0ab900c85e20afccf1fbd4/0014-bfd-profile-crash.patch
|
||||
Patch0015: 0015-CVE-2023-38802.patch
|
||||
|
||||
%description
|
||||
FRRouting is free software that manages TCP/IP based routing protocols. It takes
|
||||
@ -273,6 +278,10 @@ make check PYTHON=%{__python3}
|
||||
%endif
|
||||
|
||||
%changelog
|
||||
* Wed Sep 20 2023 Eduard Abdullin <eabdullin@almalinux.org> - 7.5.1-7.2.alma.1
|
||||
- Fix CVE-2023-38802
|
||||
- bfdd: remove profiles when removing bfd node
|
||||
|
||||
* Wed Nov 30 2022 Michal Ruprich <mruprich@redhat.com> - 7.5.1-7
|
||||
- Resolves: #2128737 - out-of-bounds read in the BGP daemon may lead to information disclosure or denial of service
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user