LibreOffice could be made to crash or potentially run programs as your login if it opened a specially crafted file.
Integer overflows were discovered in the graphics loading code of several different image types. If a user were tricked into opening a specially crafted file, an attacker could cause LibreOffice to crash or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2012-1149)
2 July 2012
A security issue affects these releases of Ubuntu and its derivatives:
LibreOffice could be made to crash or potentially run programs as your login if it opened a specially crafted file.
Integer overflows were discovered in the graphics loading code of several different image types. If a user were tricked into opening a specially crafted file, an attacker could cause LibreOffice to crash or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2012-1149)
Sven Jacobi discovered an integer overflow when processing Escher graphics records. If a user were tricked into opening a specially crafted PowerPoint file, an attacker could cause LibreOffice to crash or possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2012-2334)
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.
After a standard system update you need to restart LibreOffice to make all the necessary changes.
Vulmon