Debian DSA-2381-1 : squid3 - invalid memory deallocation

Medium Nessus Plugin ID 57521


The remote Debian host is missing a security-related update.


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.

The squid package and the version of Squid 3 shipped in lenny lack IPv6 support and are not affected by this issue.


Upgrade the squid3 packages.

For the stable distribution (squeeze), this problem has been fixed in version 3.1.6-1.2+squeeze2.

See Also

Plugin Details

Severity: Medium

ID: 57521

File Name: debian_DSA-2381.nasl

Version: 1.9

Type: local

Agent: unix

Published: 2012/01/12

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:squid3, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/01/06

Reference Information

CVE: CVE-2011-4096

BID: 50449

DSA: 2381