USN-1816-1: ClamAV vulnerabilities

Ubuntu Security Notice USN-1816-1

3rd May, 2013

clamav vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 13.04
  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS

Summary

ClamAV could be made to crash or run programs if it opened a specially crafted file.

Software description

  • clamav - Anti-virus utility for Unix

Details

It was discovered that ClamAV would incorrectly parse a UPX-packed
executable, leading to possible inappropriate heap reads. An attacker
could use this issue to cause ClamAV to crash, resulting in a denial of
service, or possibly execute arbitrary code. (CVE-2013-2020)

It was discovered that ClamAV would incorrectly parse a PDF document,
potentially writing beyond the size of a static array. An attacker could
use this issue to cause ClamAV to crash, resulting in a denial of service,
or possibly execute arbitrary code. (CVE-2013-2021)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 13.04:
clamav 0.97.8+dfsg-1ubuntu1.13.04.1
Ubuntu 12.10:
clamav 0.97.8+dfsg-1ubuntu1.12.10.1
Ubuntu 12.04 LTS:
clamav 0.97.8+dfsg-1ubuntu1.12.04.1
Ubuntu 11.10:
clamav 0.97.8+dfsg-1ubuntu1.11.10.1
Ubuntu 10.04 LTS:
clamav 0.97.8+dfsg-1ubuntu1.10.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart ClamAV to
make all the necessary changes.

References

CVE-2013-2020, CVE-2013-2021