diff options
Diffstat (limited to 'meta/recipes-connectivity/openssl/openssl/CVE-2024-2511.patch')
| -rw-r--r-- | meta/recipes-connectivity/openssl/openssl/CVE-2024-2511.patch | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/meta/recipes-connectivity/openssl/openssl/CVE-2024-2511.patch b/meta/recipes-connectivity/openssl/openssl/CVE-2024-2511.patch deleted file mode 100644 index 8772f716d5..0000000000 --- a/meta/recipes-connectivity/openssl/openssl/CVE-2024-2511.patch +++ /dev/null @@ -1,120 +0,0 @@ -From e9d7083e241670332e0443da0f0d4ffb52829f08 Mon Sep 17 00:00:00 2001 -From: Matt Caswell <matt@openssl.org> -Date: Tue, 5 Mar 2024 15:43:53 +0000 -Subject: [PATCH] Fix unconstrained session cache growth in TLSv1.3 - -In TLSv1.3 we create a new session object for each ticket that we send. -We do this by duplicating the original session. If SSL_OP_NO_TICKET is in -use then the new session will be added to the session cache. However, if -early data is not in use (and therefore anti-replay protection is being -used), then multiple threads could be resuming from the same session -simultaneously. If this happens and a problem occurs on one of the threads, -then the original session object could be marked as not_resumable. When we -duplicate the session object this not_resumable status gets copied into the -new session object. The new session object is then added to the session -cache even though it is not_resumable. - -Subsequently, another bug means that the session_id_length is set to 0 for -sessions that are marked as not_resumable - even though that session is -still in the cache. Once this happens the session can never be removed from -the cache. When that object gets to be the session cache tail object the -cache never shrinks again and grows indefinitely. - -CVE-2024-2511 - -Reviewed-by: Neil Horman <nhorman@openssl.org> -Reviewed-by: Tomas Mraz <tomas@openssl.org> -(Merged from https://github.com/openssl/openssl/pull/24043) - -CVE: CVE-2024-2511 -Upstream-Status: Backport [https://github.com/openssl/openssl/commit/e9d7083e241670332e0443da0f0d4ffb52829f08] -Signed-off-by: Peter Marko <peter.marko@siemens.com> ---- - ssl/ssl_lib.c | 5 +++-- - ssl/ssl_sess.c | 28 ++++++++++++++++++++++------ - ssl/statem/statem_srvr.c | 5 ++--- - 3 files changed, 27 insertions(+), 11 deletions(-) - -diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c -index 4afb43bc86e54..c51529ddab5bb 100644 ---- a/ssl/ssl_lib.c -+++ b/ssl/ssl_lib.c -@@ -4457,9 +4457,10 @@ void ssl_update_cache(SSL_CONNECTION *s, int mode) - - /* - * If the session_id_length is 0, we are not supposed to cache it, and it -- * would be rather hard to do anyway :-) -+ * would be rather hard to do anyway :-). Also if the session has already -+ * been marked as not_resumable we should not cache it for later reuse. - */ -- if (s->session->session_id_length == 0) -+ if (s->session->session_id_length == 0 || s->session->not_resumable) - return; - - /* -diff --git a/ssl/ssl_sess.c b/ssl/ssl_sess.c -index 3dcc4d81e5bc6..1fa6d17c46863 100644 ---- a/ssl/ssl_sess.c -+++ b/ssl/ssl_sess.c -@@ -127,16 +127,11 @@ SSL_SESSION *SSL_SESSION_new(void) - return ss; - } - --SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src) --{ -- return ssl_session_dup(src, 1); --} -- - /* - * Create a new SSL_SESSION and duplicate the contents of |src| into it. If - * ticket == 0 then no ticket information is duplicated, otherwise it is. - */ --SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket) -+static SSL_SESSION *ssl_session_dup_intern(const SSL_SESSION *src, int ticket) - { - SSL_SESSION *dest; - -@@ -265,6 +260,27 @@ SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket) - return NULL; - } - -+SSL_SESSION *SSL_SESSION_dup(const SSL_SESSION *src) -+{ -+ return ssl_session_dup_intern(src, 1); -+} -+ -+/* -+ * Used internally when duplicating a session which might be already shared. -+ * We will have resumed the original session. Subsequently we might have marked -+ * it as non-resumable (e.g. in another thread) - but this copy should be ok to -+ * resume from. -+ */ -+SSL_SESSION *ssl_session_dup(const SSL_SESSION *src, int ticket) -+{ -+ SSL_SESSION *sess = ssl_session_dup_intern(src, ticket); -+ -+ if (sess != NULL) -+ sess->not_resumable = 0; -+ -+ return sess; -+} -+ - const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s, unsigned int *len) - { - if (len) -diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c -index 853af8c0aa9f9..d5f0ab091dacc 100644 ---- a/ssl/statem/statem_srvr.c -+++ b/ssl/statem/statem_srvr.c -@@ -2445,9 +2445,8 @@ CON_FUNC_RETURN tls_construct_server_hello(SSL_CONNECTION *s, WPACKET *pkt) - * so the following won't overwrite an ID that we're supposed - * to send back. - */ -- if (s->session->not_resumable || -- (!(SSL_CONNECTION_GET_CTX(s)->session_cache_mode & SSL_SESS_CACHE_SERVER) -- && !s->hit)) -+ if (!(SSL_CONNECTION_GET_CTX(s)->session_cache_mode & SSL_SESS_CACHE_SERVER) -+ && !s->hit) - s->session->session_id_length = 0; - - if (usetls13) { |