USN-1310-1: libarchive vulnerabilities

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.

References

CVE-2011-1777, CVE-2011-1778