USN-2906-1: GNU cpio vulnerabilities
Ubuntu Security Notice USN-2906-1
22nd February, 2016
cpio vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in GNU cpio.
Software description
- 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)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
cpio
2.11+dfsg-4.1ubuntu1.1
- Ubuntu 14.04 LTS:
-
cpio
2.11+dfsg-1ubuntu1.2
- Ubuntu 12.04 LTS:
-
cpio
2.11-7ubuntu3.2
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.
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