diff options
Diffstat (limited to 'meta-oe/recipes-support/libssh/libssh/CVE-2023-48795-3.patch')
| -rw-r--r-- | meta-oe/recipes-support/libssh/libssh/CVE-2023-48795-3.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/meta-oe/recipes-support/libssh/libssh/CVE-2023-48795-3.patch b/meta-oe/recipes-support/libssh/libssh/CVE-2023-48795-3.patch new file mode 100644 index 0000000000..1635a4c2dc --- /dev/null +++ b/meta-oe/recipes-support/libssh/libssh/CVE-2023-48795-3.patch @@ -0,0 +1,47 @@ +From 5846e57538c750c5ce67df887d09fa99861c79c6 Mon Sep 17 00:00:00 2001 +From: Jakub Jelen <jjelen@redhat.com> +Date: Thu, 14 Dec 2023 12:22:01 +0100 +Subject: [PATCH] CVE-2023-48795: Strip extensions from both kex lists for + matching + +Signed-off-by: Jakub Jelen <jjelen@redhat.com> +Reviewed-by: Andreas Schneider <asn@cryptomilk.org> + +Upstream-Status: Backport [https://gitlab.com/libssh/libssh-mirror/-/commit/5846e57538c750c5ce67df887d09fa99861c79c6] +CVE: CVE-2023-48795 +Signed-off-by: Vijay Anusuri <vanusuri@mvista.com> +--- + src/kex.c | 16 ++++++++++++---- + 1 file changed, 12 insertions(+), 4 deletions(-) + +diff --git a/src/kex.c b/src/kex.c +index b03e6484..c100d908 100644 +--- a/src/kex.c ++++ b/src/kex.c +@@ -857,11 +857,19 @@ int ssh_kex_select_methods (ssh_session session){ + char *ext_start = NULL; + int i; + +- /* Here we should drop the ext-info-c from the list so we avoid matching. ++ /* Here we should drop the extensions from the list so we avoid matching. + * it. We added it to the end, so we can just truncate the string here */ +- ext_start = strstr(client->methods[SSH_KEX], ","KEX_EXTENSION_CLIENT); +- if (ext_start != NULL) { +- ext_start[0] = '\0'; ++ if (session->client) { ++ ext_start = strstr(client->methods[SSH_KEX], "," KEX_EXTENSION_CLIENT); ++ if (ext_start != NULL) { ++ ext_start[0] = '\0'; ++ } ++ } ++ if (session->server) { ++ ext_start = strstr(server->methods[SSH_KEX], "," KEX_STRICT_SERVER); ++ if (ext_start != NULL) { ++ ext_start[0] = '\0'; ++ } + } + + for (i = 0; i < KEX_METHODS_SIZE; i++) { +-- +2.25.1 + |