From: Amos Jeffries <squid3@treenet.co.nz>
Date: Sat, 16 Jan 2010 03:51:51 +0000 (+1300)
Subject: Handle DNS header-only packets as invalid.
X-Git-Tag: SQUID_3_0_STABLE22~9
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0271ca1bc031d1d5dcb8325460fbbbe62b358ab;p=thirdparty%2Fsquid.git

Handle DNS header-only packets as invalid.
---

diff --git a/lib/rfc1035.c b/lib/rfc1035.c
index 77a4d6ddfe..0552e5cd30 100644
--- a/lib/rfc1035.c
+++ b/lib/rfc1035.c
@@ -288,6 +288,10 @@ rfc1035NameUnpack(const char *buf, size_t sz, unsigned int *off, unsigned short
     assert(ns > 0);
     do {
 	assert((*off) < sz);
+        if ((*off) >= sz) {
+            RFC1035_UNPACK_DEBUG;
+            return 1;
+        }
 	c = *(buf + (*off));
 	if (c > 191) {
             /* blasted compression */