diff options
Diffstat (limited to 'main/php/CVE-2014-4049.patch')
| -rw-r--r-- | main/php/CVE-2014-4049.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/main/php/CVE-2014-4049.patch b/main/php/CVE-2014-4049.patch new file mode 100644 index 0000000000..c614d432c9 --- /dev/null +++ b/main/php/CVE-2014-4049.patch @@ -0,0 +1,30 @@ +From 4f73394fdd95d3165b4391e1b0dedd57fced8c3b Mon Sep 17 00:00:00 2001 +From: Sara Golemon <pollita@php.net> +Date: Tue, 10 Jun 2014 11:18:02 -0700 +Subject: [PATCH] Fix potential segfault in dns_get_record() + +If the remote sends us a packet with a malformed TXT record, +we could end up trying to over-consume the packet and wander +off into overruns. +--- + ext/standard/dns.c | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/ext/standard/dns.c b/ext/standard/dns.c +index 6a89446..214a7dc 100644 +--- a/ext/standard/dns.c ++++ b/ext/standard/dns.c +@@ -517,6 +517,10 @@ static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int + + while (ll < dlen) { + n = cp[ll]; ++ if ((ll + n) >= dlen) { ++ // Invalid chunk length, truncate ++ n = dlen - (ll + 1); ++ } + memcpy(tp + ll , cp + ll + 1, n); + add_next_index_stringl(entries, cp + ll + 1, n, 1); + ll = ll + n + 1; +-- +1.9.3 + |