Ghostscript could be made to crash or run programs as your login if it opened a specially crafted file.
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)
4 January 2012
A security issue affects these releases of Ubuntu and its derivatives:
Ghostscript could be made to crash or run programs as your login if it opened a specially crafted file.
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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon