ClamAV: Multiple vulnerabilities

Security Team Contact Address

Updated May 20, 2008

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200805-19 / clamav
Release Date	May 20, 2008
Latest Revision	May 20, 2008: 01
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-antivirus/clamav	< 0.93	>= 0.93	All supported architectures

Related bugreports: #213762

Synopsis

Multiple vulnerabilities in ClamAV may result in the remote execution of arbitrary code.

2. Impact Information

Background

Clam AntiVirus is a free anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways.

Description

Multiple vulnerabilities have been reported:

Damian Put reported a heap-based buffer overflow when processing PeSpin packed PE binaries (CVE-2008-0314).
Alin Rad Pop of Secunia Research reported a buffer overflow in the cli_scanpe() function when processing Upack PE binaries (CVE-2008-1100).
Hanno Boeck reported an infinite loop when processing ARJ archives (CVE-2008-1387).
Damian Put and Thomas Pollet reported a heap-based buffer overflow when processing WWPack compressed PE binaries (CVE-2008-1833).
A buffer over-read was discovered in the rfc2231() function when producing a string that is not NULL terminated (CVE-2008-1836).
An unspecified vulnerability leading to "memory problems" when scanning RAR files was reported (CVE-2008-1837).
Thierry Zoller reported that scanning of RAR files could be circumvented (CVE-2008-1835).

Impact

A remote attacker could entice a user or automated system to scan a specially crafted file, possibly leading to the execution of arbitrary code with the privileges of the user running ClamAV (either a system user or the "clamav" user if clamd is compromised), or a Denial of Service.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All ClamAV users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.93"

4. References