Ubuntu Security Notice USN-656-1
15th October, 2008
cupsys vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 8.04 LTS
- Ubuntu 7.10
- Ubuntu 7.04
- Ubuntu 6.06 LTS
Software description
- cupsys
Details
It was discovered that the SGI image filter in CUPS did not perform
proper bounds checking. If a user or automated system were tricked
into opening a crafted SGI image, an attacker could cause a denial
of service. (CVE-2008-3639)
It was discovered that the texttops filter in CUPS did not properly
validate page metrics. If a user or automated system were tricked into
opening a crafted text file, an attacker could cause a denial of
service. (CVE-2008-3640)
It was discovered that the HP-GL filter in CUPS did not properly check
for invalid pen parameters. If a user or automated system were tricked
into opening a crafted HP-GL or HP-GL/2 file, a remote attacker could
cause a denial of service or execute arbitrary code with user
privileges. In Ubuntu 7.10 and 8.04 LTS, attackers would be isolated by
the AppArmor CUPS profile. (CVE-2008-3641)
NOTE: The previous update for CUPS on Ubuntu 6.06 LTS did not have the
the fix for CVE-2008-1722 applied. This update includes fixes for the
problem. We apologize for the inconvenience.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 8.04 LTS:
- cupsys 1.3.7-1ubuntu3.1
- Ubuntu 7.10:
- cupsys 1.3.2-1ubuntu7.8
- Ubuntu 7.04:
- cupsys 1.2.8-0ubuntu8.6
- Ubuntu 6.06 LTS:
- cupsys 1.2.2-0ubuntu0.6.06.11
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.