USN-598-1: CUPS vulnerabilities

2 April 2008

cupsys vulnerabilities

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

  • Ubuntu 7.10
  • Ubuntu 7.04
  • Ubuntu 6.10
  • Ubuntu 6.06 LTS

Software Description

  • cupsys

Details

It was discovered that the CUPS administration interface contained a heap- based overflow flaw. A local attacker, and a remote attacker if printer sharing is enabled, could send a malicious request and possibly execute arbitrary code as the non-root user in Ubuntu 6.06 LTS, 6.10, and 7.04. In Ubuntu 7.10, attackers would be isolated by the AppArmor CUPS profile. (CVE-2008-0047)

It was discovered that the hpgl filter in CUPS did not properly validate its input when parsing parameters. If a crafted HP-GL/2 file were printed, an attacker could possibly execute arbitrary code as the non-root user in Ubuntu 6.06 LTS, 6.10, and 7.04. In Ubuntu 7.10, attackers would be isolated by the AppArmor CUPS profile. (CVE-2008-0053)

It was discovered that CUPS had a flaw in its managing of remote shared printers via IPP. A remote attacker could send a crafted UDP packet and cause a denial of service or possibly execute arbitrary code as the non-root user in Ubuntu 6.06 LTS, 6.10, and 7.04. In Ubuntu 7.10, attackers would be isolated by the AppArmor CUPS profile. (CVE-2008-0882)

It was discovered that CUPS did not properly perform bounds checking in its GIF decoding routines. If a crafted GIF file were printed, an attacker could possibly execute arbitrary code as the non-root user in Ubuntu 6.06 LTS, 6.10, and 7.04. In Ubuntu 7.10, attackers would be isolated by the AppArmor CUPS profile. (CVE-2008-1373)

Update instructions

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

Ubuntu 7.10
cupsys - 1.3.2-1ubuntu7.6
Ubuntu 7.04
cupsys - 1.2.8-0ubuntu8.3
Ubuntu 6.10
cupsys - 1.2.4-2ubuntu3.3
Ubuntu 6.06 LTS
cupsys - 1.2.2-0ubuntu0.6.06.8

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

In general, a standard system upgrade is sufficient to effect the necessary changes.

References