dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Squid | Squid-cache | 3.1.6 (including) | 3.1.6 (including) |
| Squid3 | Ubuntu | jaunty | * |
| Squid3 | Ubuntu | maverick | * |
References
- http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072
- http://bugs.gentoo.org/show_bug.cgi?id=334263
- http://bugs.squid-cache.org/show_bug.cgi?id=3009
- http://bugs.squid-cache.org/show_bug.cgi?id=3021
- http://marc.info/?l=squid-users\u0026m=128263555724981\u0026w=2
- http://www.openwall.com/lists/oss-security/2010/08/24/6
- http://www.openwall.com/lists/oss-security/2010/08/24/7
- http://www.openwall.com/lists/oss-security/2010/08/25/2
- http://www.openwall.com/lists/oss-security/2010/08/25/6
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch
- https://bugzilla.redhat.com/show_bug.cgi?id=626927
- http://bazaar.launchpad.net/~squid/squid/3.1/revision/10072
- http://bugs.gentoo.org/show_bug.cgi?id=334263
- http://bugs.squid-cache.org/show_bug.cgi?id=3009
- http://bugs.squid-cache.org/show_bug.cgi?id=3021
- http://marc.info/?l=squid-users\u0026m=128263555724981\u0026w=2
- http://www.openwall.com/lists/oss-security/2010/08/24/6
- http://www.openwall.com/lists/oss-security/2010/08/24/7
- http://www.openwall.com/lists/oss-security/2010/08/25/2
- http://www.openwall.com/lists/oss-security/2010/08/25/6
- http://www.squid-cache.org/Versions/v3/3.1/changesets/squid-3.1-10072.patch
- https://bugzilla.redhat.com/show_bug.cgi?id=626927