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Debian DSA-2040-1 : squidguard - buffer overflow

medium Nessus Plugin ID 46213

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Synopsis

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

Description

It was discovered that in squidguard, a URL redirector/filter/ACL plugin for squid, several problems in src/sgLog.c and src/sgDiv.c allow remote users to either :

 - cause a denial of service, by requesting long URLs containing many slashes; this forces the daemon into emergency mode, where it does not process requests anymore.
 - bypass rules by requesting URLs whose length is close to predefined buffer limits, in this case 2048 for squidguard and 4096 or 8192 for squid (depending on its version).

Solution

Upgrade the squidguard package.

For the stable distribution (lenny), this problem has been fixed in version 1.2.0-8.4+lenny1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=553319

https://www.debian.org/security/2010/dsa-2040

Plugin Details

Severity: Medium

ID: 46213

File Name: debian_DSA-2040.nasl

Version: 1.11

Type: local

Agent: unix

Published: 5/3/2010

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:squidguard, cpe:/o:debian:debian_linux:5.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/2/2010

Reference Information

CVE: CVE-2009-3700, CVE-2009-3826

BID: 36800

CWE: 119

DSA: 2040