diff options
Diffstat (limited to 'gnu/packages/patches/libtasn1-CVE-2017-6891.patch')
| -rw-r--r-- | gnu/packages/patches/libtasn1-CVE-2017-6891.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gnu/packages/patches/libtasn1-CVE-2017-6891.patch b/gnu/packages/patches/libtasn1-CVE-2017-6891.patch new file mode 100644 index 0000000000..1f847ed025 --- /dev/null +++ b/gnu/packages/patches/libtasn1-CVE-2017-6891.patch @@ -0,0 +1,51 @@ +Fix CVE-2017-6891: + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6891 + +Patch copied from upstream source repository: + +https://git.savannah.gnu.org/cgit/libtasn1.git/commit/?id=5520704d075802df25ce4ffccc010ba1641bd484 + +From 5520704d075802df25ce4ffccc010ba1641bd484 Mon Sep 17 00:00:00 2001 +From: Nikos Mavrogiannopoulos <nmav@redhat.com> +Date: Thu, 18 May 2017 18:03:34 +0200 +Subject: [PATCH] asn1_find_node: added safety check on asn1_find_node() + +This prevents a stack overflow in asn1_find_node() which +is triggered by too long variable names in the definitions +files. That means that applications have to deliberately +pass a too long 'name' constant to asn1_write_value() +and friends. Reported by Jakub Jirasek. + +Signed-off-by: Nikos Mavrogiannopoulos <nmav@redhat.com> +--- + lib/parser_aux.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/lib/parser_aux.c b/lib/parser_aux.c +index b4a7370..976ab38 100644 +--- a/lib/parser_aux.c ++++ b/lib/parser_aux.c +@@ -120,6 +120,9 @@ asn1_find_node (asn1_node pointer, const char *name) + if (n_end) + { + nsize = n_end - n_start; ++ if (nsize >= sizeof(n)) ++ return NULL; ++ + memcpy (n, n_start, nsize); + n[nsize] = 0; + n_start = n_end; +@@ -158,6 +161,9 @@ asn1_find_node (asn1_node pointer, const char *name) + if (n_end) + { + nsize = n_end - n_start; ++ if (nsize >= sizeof(n)) ++ return NULL; ++ + memcpy (n, n_start, nsize); + n[nsize] = 0; + n_start = n_end; +-- +2.13.0 + |