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[ GLSA 200712-20 ] ClamAV: Multiple vulnerabilities
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PostPosted: Sat Dec 29, 2007 6:26 pm    Post subject: [ GLSA 200712-20 ] ClamAV: Multiple vulnerabilities Reply with quote

Gentoo Linux Security Advisory

Title: ClamAV: Multiple vulnerabilities (GLSA 200712-20)
Severity: high
Exploitable: remote
Date: December 29, 2007
Bug(s): #202762
ID: 200712-20

Synopsis

Multiple vulnerabilities have been discovered in ClamAV allowing remote execution of arbitrary code and Denial of Service attacks.

Background

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

Affected Packages

Package: app-antivirus/clamav
Vulnerable: < 0.91.2-r1
Unaffected: >= 0.91.2-r1
Architectures: All supported architectures


Description

iDefense reported an integer overflow vulnerability in the cli_scanpe() function when parsing Portable Executable (PE) files packed in the MEW format, that could be exploited to cause a heap-based buffer overflow (CVE-2007-6335). Toeroek Edwin reported an off-by-one error when decompressing MS-ZIP compressed CAB files (CVE-2007-6336). An unspecified vulnerability related to the bzip2 decompression algorithm has also been discovered (CVE-2007-6337).

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).

Workaround

There is no known workaround at this time.

Resolution

All ClamAV users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.91.2-r1"


References

CVE-2007-6335
CVE-2007-6336
CVE-2007-6337
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