[ GLSA 200909-04 ] Clam AntiVirus: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Clam AntiVirus: Multiple vulnerabilities (GLSA 200909-04)
Severity: normal
Exploitable: remote
Date: September 09, 2009
Bug(s): #264834, #265545
ID: 200909-04

Synopsis


Multiple vulnerabilities in ClamAV allow for the remote execution of
arbitrary code or Denial of Service.


Background


Clam AntiVirus (short: ClamAV) is an anti-virus toolkit for UNIX,
designed especially for e-mail scanning on mail gateways.


Affected Packages

Package: app-antivirus/clamav
Vulnerable: < 0.95.2
Unaffected: >= 0.95.2
Architectures: All supported architectures


Description


Multiple vulnerabilities have been found in ClamAV:

• The
  vendor reported a Divide-by-zero error in the PE ("Portable
  Executable"; Windows .exe) file handling of ClamAV
  (CVE-2008-6680).
• Jeffrey Thomas Peckham found a flaw in
  libclamav/untar.c, possibly resulting in an infinite loop when
  processing TAR archives in clamd and clamscan (CVE-2009-1270).
• Martin Olsen reported a vulnerability in the CLI_ISCONTAINED macro
  in libclamav/others.h, when processing UPack archives
  (CVE-2009-1371).
• Nigel disclosed a stack-based buffer overflow
  in the "cli_url_canon()" function in libclamav/phishcheck.c when
  processing URLs (CVE-2009-1372).

Impact


A remote attacker could entice a user or automated system to process a
specially crafted UPack archive or a file containing a specially
crafted URL, possibly resulting in the remote execution of arbitrary
code with the privileges of the user running the application, or a
Denial of Service. Furthermore, a remote attacker could cause a Denial
of Service by supplying a specially crafted TAR archive or PE
executable to a Clam AntiVirus instance.


Workaround


There is no known workaround at this time.


Resolution


All Clam AntiVirus users should upgrade to the latest version: