Ubuntu released security advisory to fix the Critical vulnerabilities in Ghostscript.
Ghostscript could be made to crash or run programs as your login if it opened a specially crafted file.
Affected versions:
Ubuntu 10.10
Ubuntu 10.04 LTS
Ubuntu 8.04 LTS
Vulnerability Details:
It was discovered that Ghostscript did not correctly handle memory
allocation when parsing certain malformed JPEG-2000 images. If a user or
automated system were tricked into opening a specially crafted image, an
attacker could cause a denial of service and possibly execute arbitrary
code with user privileges. (CVE-2008-3520)
It was discovered that Ghostscript did not correctly handle certain
formatting operations when parsing JPEG-2000 images. If a user or automated
system were tricked into opening a specially crafted image, an attacker
could cause a denial of service and possibly execute arbitrary code with
user privileges. (CVE-2008-3522)
It was discovered that Ghostscript incorrectly handled certain malformed
TrueType fonts. If a user or automated system were tricked into opening a
document containing a specially crafted font, an attacker could cause a
denial of service and possibly execute arbitrary code with user privileges.
This issue only affected Ubuntu 8.04 LTS. (CVE-2009-3743)
It was discovered that Ghostscript incorrectly handled certain malformed
Type 2 fonts. If a user or automated system were tricked into opening a
document containing a specially crafted font, an attacker could cause a
denial of service and possibly execute arbitrary code with user privileges.
This issue only affected Ubuntu 8.04 LTS. (CVE-2010-4054)
Jonathan Foote discovered that Ghostscript incorrectly handled certain
malformed JPEG-2000 image files. If a user or automated system were tricked
into opening a specially crafted JPEG-2000 image file, an attacker could
cause Ghostscript to crash or possibly execute arbitrary code with user
privileges. (CVE-2011-4516, CVE-2011-4517)
Solution:
The problem can be corrected by updating your system to the following package version:- Ubuntu 10.10:
- libgs8 8.71.dfsg.2-0ubuntu7.1
- Ubuntu 10.04 LTS:
- libgs8 8.71.dfsg.1-0ubuntu5.4
- Ubuntu 8.04 LTS:
- libgs8 8.61.dfsg.1-1ubuntu3.4
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
