USN-3033-1: libarchive vulnerabilities

14 July 2016

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

Releases

Packages

  • 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
Ubuntu 15.10
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.