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CVE-2011-4096

Status Candidate

Overview

The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record.

Related Files

Gentoo Linux Security Advisory 201309-22
Posted Sep 27, 2013
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201309-22 - Multiple vulnerabilities have been found in Squid, possibly resulting in remote Denial of Service. Versions less than 3.2.13 are affected.

tags | advisory, remote, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2009-0801, CVE-2011-4096, CVE-2012-5643, CVE-2013-0189, CVE-2013-1839, CVE-2013-4115, CVE-2013-4123
SHA-256 | 0c44f7d361e4ed8a9c424771c417f381ffacb9d1092ef7260b173349c11cc6d9
Debian Security Advisory 2381-1
Posted Jan 7, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2381-1 - It was discovered that the IPv6 support code in Squid does not properly handle certain DNS responses, resulting in deallocation of an invalid pointer and a daemon crash.

tags | advisory
systems | linux, debian
advisories | CVE-2011-4096
SHA-256 | 17e34658a97477a20eed60bd15f3b6425fcbe048094fb417f5bec8484204a56c
Mandriva Linux Security Advisory 2011-193
Posted Dec 27, 2011
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2011-193 - The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record. The updated packages have been patched to correct this issue.

tags | advisory, remote, denial of service
systems | linux, mandriva
advisories | CVE-2011-4096
SHA-256 | 7cc994dd5dc1c1d61d6b7854d62ddbed4330325a505629aa1262a3dfcded25f0
Red Hat Security Advisory 2011-1791-01
Posted Dec 7, 2011
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2011-1791-01 - Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. An input validation flaw was found in the way Squid calculated the total number of resource records in the answer section of multiple name server responses. An attacker could use this flaw to cause Squid to crash. Users of squid should upgrade to this updated package, which contains a backported patch to correct this issue. After installing this update, the squid service will be restarted automatically.

tags | advisory, web
systems | linux, redhat
advisories | CVE-2011-4096
SHA-256 | 9462f28ff2caece7931bb6bc345528dd2407fca7d2940e8d4d8ed21ebb083998
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