Ubuntu Security Notice USN-1310-1
19th December, 2011
libarchive vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
Summary
libarchive could be made to crash or run programs as your login if it opened a specially crafted file.
Software description
- libarchive - Library to read/write archive files
Details
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)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 11.10:
- libarchive1 2.8.4-1ubuntu0.11.10.1
- Ubuntu 11.04:
- libarchive1 2.8.4-1ubuntu0.11.04.1
- Ubuntu 10.10:
- libarchive1 2.8.4-1ubuntu0.10.10.1
- Ubuntu 10.04 LTS:
- libarchive1 2.8.0-2ubuntu0.1
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.