USN-3033-1: libarchive vulnerabilities

14 July 2016

libarchive vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 16.04 LTS
  • Ubuntu 15.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS

Summary

libarchive could be made to crash or run programs if it opened a specially crafted file.

Software Description

  • libarchive - Library to read/write archive files

Details

Hanno Böck discovered that libarchive contained multiple security issues when processing certain malformed archive files. A remote attacker could use this issue to cause libarchive to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-8916, CVE-2015-8917 CVE-2015-8919, CVE-2015-8920, CVE-2015-8921, CVE-2015-8922, CVE-2015-8923, CVE-2015-8924, CVE-2015-8925, CVE-2015-8926, CVE-2015-8928, CVE-2015-8930, CVE-2015-8931, CVE-2015-8932, CVE-2015-8933, CVE-2015-8934, CVE-2016-5844)

Marcin “Icewall” Noga discovered that libarchive contained multiple security issues when processing certain malformed archive files. A remote attacker could use this issue to cause libarchive to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-4300, CVE-2016-4302)

It was discovered that libarchive incorrectly handled memory allocation with large cpio symlinks. A remote attacker could use this issue to possibly cause libarchive to crash, resulting in a denial of service. (CVE-2016-4809)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 16.04 LTS
libarchive13 - 3.1.2-11ubuntu0.16.04.2
Ubuntu 15.10
libarchive13 - 3.1.2-11ubuntu0.15.10.2
Ubuntu 14.04 LTS
libarchive13 - 3.1.2-7ubuntu2.3
Ubuntu 12.04 LTS
libarchive12 - 3.0.3-6ubuntu1.3

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