libarchive could be made to crash or run programs as your login if it opened a specially crafted file.
It was discovered that libarchive incorrectly handled certain ISO 9660 image files. If a user were tricked into using a specially crafted ISO 9660 image file, a remote attacker could cause libarchive to crash or possibly execute arbitrary code with user privileges. (CVE-2011-1777)
19 December 2011
A security issue affects these releases of Ubuntu and its derivatives:
libarchive could be made to crash or run programs as your login if it opened a specially crafted file.
It was discovered that libarchive incorrectly handled certain ISO 9660 image files. If a user were tricked into using a specially crafted ISO 9660 image file, a remote attacker could cause libarchive to crash or possibly execute arbitrary code with user privileges. (CVE-2011-1777)
It was discovered that libarchive incorrectly handled certain tar archive files. If a user were tricked into using a specially crafted tar file, a remote attacker could cause libarchive to crash or possibly execute arbitrary code with user privileges. (CVE-2011-1778)
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