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x509: unpack IPv6 general names based on length

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Resolves: RHEL-32720
Signed-off-by: Daiki Ueno <dueno@redhat.com>
This commit is contained in:
Daiki Ueno 2024-04-13 07:39:27 +09:00
parent 673a1e3414
commit 75c01c300b
2 changed files with 200 additions and 0 deletions
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198
libreswan-4.12-ipv6-san.patch Normal file
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@ -0,0 +1,198 @@
From 474d75be074799efa9e38f346d3fdb76dec3eead Mon Sep 17 00:00:00 2001
From: Andrew Cagney <cagney@gnu.org>
Date: Tue, 5 Dec 2023 13:55:37 -0500
Subject: [PATCH] x509: unpack IPv6 general names based on length
fix #1321
---
programs/pluto/x509.c | 35 +++++++++++++++++++++++++++++------
1 file changed, 29 insertions(+), 6 deletions(-)
diff --git a/programs/pluto/x509.c b/programs/pluto/x509.c
index fbbf5a553e..f7e97b9979 100644
--- a/programs/pluto/x509.c
+++ b/programs/pluto/x509.c
@@ -336,7 +336,7 @@ generalName_t *collect_rw_ca_candidates(struct msg_digest *md)
*/
static void gntoid(struct id *id, const generalName_t *gn, struct logger *logger)
{
- *id = empty_id;
+ *id = empty_id; /* aka ID_NONE */
switch (gn->kind) {
case GN_DNS_NAME: /* ID type: ID_FQDN */
@@ -345,18 +345,37 @@ static void gntoid(struct id *id, const generalName_t *gn, struct logger *logger
break;
case GN_IP_ADDRESS: /* ID type: ID_IPV4_ADDR */
{
+ const struct ip_info *afi = NULL;
+ for (enum ip_index i = 0; i < IP_INDEX_ROOF; i++) {
+ if (ip_families[i].ip_size == gn->name.len) {
+ afi = &ip_families[i];
+ break;
+ }
+ }
+ if (afi == NULL) {
+ llog(RC_LOG, logger,
+ "warning: invalid IP_ADDRESS general name: %zu byte length is not valid",
+ gn->name.len);
+ PEXPECT(logger, id->kind == ID_NONE);
+ return;
+ }
+
/*
* XXX: why could this fail; and what happens when it
* is ignored?
*/
- const struct ip_info *afi = &ipv4_info;
- id->kind = afi->id_ip_addr;
- err_t ugh = hunk_to_address(gn->name, afi, &id->ip_addr);
+ ip_address addr;
+ err_t ugh = hunk_to_address(gn->name, afi, &addr);
if (ugh != NULL) {
llog(RC_LOG, logger,
- "warning: gntoid() failed to initaddr(): %s",
- ugh);
+ "warning: invalid IP_ADDRESS general name: %s",
+ ugh);
+ PEXPECT(logger, id->kind == ID_NONE);
+ return;
}
+
+ id->kind = afi->id_ip_addr;
+ id->ip_addr = addr;
break;
}
case GN_RFC822_NAME: /* ID type: ID_USER_FQDN */
@@ -464,14 +483,18 @@ bool add_pubkey_from_nss_cert(struct pubkey_list **pubkey_db,
return false;
}
+ ldbg(logger, "adding cert using subject name");
replace_public_key(pubkey_db, &pk);
passert(pk == NULL); /*stolen*/
+ ldbg(logger, "adding cert using general names");
add_cert_san_pubkeys(pubkey_db, cert, logger);
if (keyid != NULL && keyid->kind != ID_DER_ASN1_DN &&
keyid->kind != ID_NONE &&
keyid->kind != ID_FROMCERT) {
+ id_buf idb;
+ ldbg(logger, "adding cert using keyid %s", str_id(keyid, &idb));
struct pubkey *pk2 = NULL;
diag_t d = create_pubkey_from_cert(keyid, cert, &pk2, logger);
if (d != NULL) {
--
2.44.0
From 1e27be95cd710a840681d1a51913e6a32ce75a2a Mon Sep 17 00:00:00 2001
From: Andrew Cagney <cagney@gnu.org>
Date: Mon, 11 Mar 2024 17:18:51 -0400
Subject: [PATCH] building: back-port ip_families[] and ip_index
---
include/ip_index.h | 27 +++++++++++++++++++++++++++
include/ip_info.h | 7 +++++--
lib/libswan/ip_info.c | 9 ++++++---
3 files changed, 38 insertions(+), 5 deletions(-)
create mode 100644 include/ip_index.h
diff --git a/include/ip_index.h b/include/ip_index.h
new file mode 100644
index 0000000000..508589b05e
--- /dev/null
+++ b/include/ip_index.h
@@ -0,0 +1,27 @@
+/* ip address type index, for libreswan
+ *
+ * Copyright (C) 2022 Andrew Cagney
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version. See <https://www.gnu.org/licenses/lgpl-2.1.txt>.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
+ * License for more details.
+ *
+ */
+
+#ifndef IP_INDEX_H
+#define IP_INDEX_H
+
+enum ip_index {
+ IPv4_INDEX,
+ IPv6_INDEX,
+};
+
+#define IP_INDEX_ROOF (IPv6_INDEX+1)
+
+#endif
diff --git a/include/ip_info.h b/include/ip_info.h
index 40e99ef687..c1329a8569 100644
--- a/include/ip_info.h
+++ b/include/ip_info.h
@@ -9,6 +9,7 @@
#include "ip_subnet.h"
#include "ip_selector.h"
#include "ip_sockaddr.h"
+#include "ip_index.h"
struct ip_info {
/*
@@ -113,8 +114,10 @@ struct ip_info {
};
-extern const struct ip_info ipv4_info;
-extern const struct ip_info ipv6_info;
+extern const struct ip_info ip_families[IP_INDEX_ROOF];
+
+#define ipv4_info ip_families[IPv4_INDEX]
+#define ipv6_info ip_families[IPv6_INDEX]
extern const struct ip_info *aftoinfo(int af);
diff --git a/lib/libswan/ip_info.c b/lib/libswan/ip_info.c
index 70cd6a368f..97296d3a11 100644
--- a/lib/libswan/ip_info.c
+++ b/lib/libswan/ip_info.c
@@ -158,7 +158,9 @@ static ip_port port_from_ipv6_sockaddr(const ip_sockaddr sa)
#define IPv4_FF { { 255, 255, 255, 255, }, }
-const struct ip_info ipv4_info = {
+const struct ip_info ip_families[IP_INDEX_ROOF] = {
+
+ [IPv4_INDEX] = {
.ip_version = IPv4,
.ip_size = sizeof(struct in_addr),
@@ -210,11 +212,11 @@ const struct ip_info ipv4_info = {
.id_ip_addr = ID_IPV4_ADDR,
.id_ip_addr_subnet = ID_IPV4_ADDR_SUBNET,
.id_ip_addr_range = ID_IPV4_ADDR_RANGE,
-};
+ },
#define IPv6_FF { { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }, }
-const struct ip_info ipv6_info = {
+ [IPv6_INDEX] = {
.ip_version = IPv6,
.ip_size = sizeof(struct in6_addr),
@@ -266,6 +268,7 @@ const struct ip_info ipv6_info = {
.id_ip_addr = ID_IPV6_ADDR,
.id_ip_addr_subnet = ID_IPV6_ADDR_SUBNET,
.id_ip_addr_range = ID_IPV6_ADDR_RANGE,
+ }
};
const struct ip_info *aftoinfo(int af)
--
2.44.0

2
libreswan.spec
View File

@ -42,6 +42,7 @@ Source3: https://download.libreswan.org/cavs/ikev2.fax.bz2
%endif %endif
Patch: libreswan-4.6-ikev1-policy-defaults-to-drop.patch Patch: libreswan-4.6-ikev1-policy-defaults-to-drop.patch
Patch: libreswan-4.12-ikev2-auth-delete-state.patch Patch: libreswan-4.12-ikev2-auth-delete-state.patch
Patch: libreswan-4.12-ipv6-san.patch
BuildRequires: audit-libs-devel BuildRequires: audit-libs-devel
BuildRequires: bison BuildRequires: bison
@ -199,6 +200,7 @@ certutil -N -d sql:$tmpdir --empty-password
%changelog %changelog
* Thu Apr 11 2024 Daiki Ueno <dueno@redhat.com> - 4.12-2 * Thu Apr 11 2024 Daiki Ueno <dueno@redhat.com> - 4.12-2
- Fix CVE-2024-2357 (RHEL-28743) - Fix CVE-2024-2357 (RHEL-28743)
- x509: unpack IPv6 general names based on length (RHEL-32720)
* Wed Aug 9 2023 Daiki Ueno <dueno@redhat.com> - 4.12-1 * Wed Aug 9 2023 Daiki Ueno <dueno@redhat.com> - 4.12-1
- Update to 4.12 to fix CVE-2023-38710, CVE-2023-38711, CVE-2023-38712 - Update to 4.12 to fix CVE-2023-38710, CVE-2023-38711, CVE-2023-38712