ClamAV: Multiple vulnerabilities — GLSA 200704-21

Multiple vulnerabilities have been discovered in ClamAV allowing for the remote execution of arbitrary code.

Affected Packages

app-antivirus/clamav on all architectures
Affected versions < 0.90.2
Unaffected versions >= 0.90.2

Background

ClamAV is a GPL virus scanner.

Description

iDefense Labs have reported a stack-based buffer overflow in the cab_unstore() function when processing negative values in .cab files. Multiple file descriptor leaks have also been reported in chmunpack.c, pdf.c and dblock.c when processing .chm files.

Impact

A remote attacker could send a specially crafted CHM file to the scanner, possibly resulting in the remote execution of arbitrary code with the privileges of the user running ClamAV.

Workaround

There is no known workaround at this time.

Resolution

All ClamAV users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.90.2"

References

Release Date
April 24, 2007

Latest Revision
April 24, 2007: 01

Severity
high

Exploitable
remote

Bugzilla entries