1. Ubuntu Security Notices
  2. USN-2906-1

USN-2906-1: GNU cpio vulnerabilities

Publication date

22 February 2016

Overview

Several security issues were fixed in GNU cpio.

Releases

Packages

  • cpio - a tool to manage archives of files

Details

Alexander Cherepanov discovered that GNU cpio incorrectly handled symbolic
links when used with the --no-absolute-filenames option. If a user or
automated system were tricked into extracting a specially-crafted cpio
archive, a remote attacker could possibly use this issue to write arbitrary
files. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2015-1197)

Gustavo Grieco discovered that GNU cpio incorrectly handled memory when
extracting archive files. If a user or automated system were tricked into
extracting a specially-crafted cpio archive, a remote attacker could use
this issue to cause GNU cpio to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2016-2037)

Alexander Cherepanov discovered that GNU cpio incorrectly handled symbolic
links when used with the --no-absolute-filenames option. If a user or
automated system were tricked into extracting a specially-crafted cpio
archive, a remote attacker could possibly use this issue to write arbitrary
files. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2015-1197)

Gustavo Grieco discovered that GNU cpio incorrectly handled memory when
extracting archive files. If a user or automated system were tricked into
extracting a specially-crafted cpio archive, a remote attacker could use
this issue to cause GNU cpio to crash, resulting in a denial of service, or
possibly execute arbitrary code. (CVE-2016-2037)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
15.10 wily cpio –  2.11+dfsg-4.1ubuntu1.1
14.04 trusty cpio –  2.11+dfsg-1ubuntu1.2
12.04 precise cpio –  2.11-7ubuntu3.2

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References

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