diff options
Diffstat (limited to 'CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch')
| -rw-r--r-- | CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch b/CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch new file mode 100644 index 0000000..f5b0488 --- /dev/null +++ b/CVE-2022-23219-Buffer-overflow-in-sunrpc-clnt_create.patch @@ -0,0 +1,65 @@ +From 226b46770c82899b555986583294b049c6ec9b40 Mon Sep 17 00:00:00 2001 +From: Florian Weimer <fweimer@redhat.com> +Date: Mon, 17 Jan 2022 10:21:34 +0100 +Subject: [PATCH] CVE-2022-23219: Buffer overflow in sunrpc clnt_create for + "unix" (bug 22542) + +Processing an overlong pathname in the sunrpc clnt_create function +results in a stack-based buffer overflow. + +Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org> + +--- + NEWS | 14 ++++++++++++++ + sunrpc/clnt_gen.c | 10 +++++++--- + 2 files changed, 21 insertions(+), 3 deletions(-) + +diff --git a/NEWS b/NEWS +index 3c610744..dbe6f086 100644 +--- a/NEWS ++++ b/NEWS +@@ -4,6 +4,20 @@ See the end for copying conditions. + + Please send GNU C library bug reports via <https://sourceware.org/bugzilla/> + using `glibc' in the "product" field. ++ ++^L ++Version 2.34.1 ++ ++Security related changes: ++ ++ CVE-2022-23219: Passing an overlong file name to the clnt_create ++ legacy function could result in a stack-based buffer overflow when ++ using the "unix" protocol. Reported by Martin Sebor. ++ ++The following bugs are resolved with this release: ++ ++ [22542] CVE-2022-23219: Buffer overflow in sunrpc clnt_create for "unix" ++ + + Version 2.34 + +diff --git a/sunrpc/clnt_gen.c b/sunrpc/clnt_gen.c +index 13ced899..b44357cd 100644 +--- a/sunrpc/clnt_gen.c ++++ b/sunrpc/clnt_gen.c +@@ -57,9 +57,13 @@ clnt_create (const char *hostname, u_long prog, u_long vers, + + if (strcmp (proto, "unix") == 0) + { +- memset ((char *)&sun, 0, sizeof (sun)); +- sun.sun_family = AF_UNIX; +- strcpy (sun.sun_path, hostname); ++ if (__sockaddr_un_set (&sun, hostname) < 0) ++ { ++ struct rpc_createerr *ce = &get_rpc_createerr (); ++ ce->cf_stat = RPC_SYSTEMERROR; ++ ce->cf_error.re_errno = errno; ++ return NULL; ++ } + sock = RPC_ANYSOCK; + client = clntunix_create (&sun, prog, vers, &sock, 0, 0); + if (client == NULL) +-- +2.27.0 + |