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Ubuntu Security Notice USN-1979-1

Ubuntu Security Notice USN-1979-1
Posted Sep 30, 2013
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1979-1 - Patrick J Cherry discovered that txt2man contained leftover debugging code that incorrectly created a temporary file. A local attacker could possibly use this issue to overwrite arbitrary files. In the default Ubuntu installation, this should be prevented by the Yama link restrictions.

tags | advisory, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2013-1444
SHA-256 | f4d5073ca30139fcdb4c84c26250e6fafe08effaafd26c55c42ece53578c1ab4

Ubuntu Security Notice USN-1979-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1979-1
September 30, 2013

txt2man vulnerability
============================================================================

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

- Ubuntu 13.04
- Ubuntu 12.10
- Ubuntu 12.04 LTS

Summary:

txt2man could be made to overwrite files.

Software Description:
- txt2man: Converts flat ASCII text to man page format

Details:

Patrick J Cherry discovered that txt2man contained leftover debugging code
that incorrectly created a temporary file. A local attacker could possibly
use this issue to overwrite arbitrary files. In the default Ubuntu
installation, this should be prevented by the Yama link restrictions.

Update instructions:

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

Ubuntu 13.04:
txt2man 1.5.5-4ubuntu0.13.04.1

Ubuntu 12.10:
txt2man 1.5.5-4ubuntu0.12.10.1

Ubuntu 12.04 LTS:
txt2man 1.5.5-4ubuntu0.12.04.1

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

References:
http://www.ubuntu.com/usn/usn-1979-1
CVE-2013-1444

Package Information:
https://launchpad.net/ubuntu/+source/txt2man/1.5.5-4ubuntu0.13.04.1
https://launchpad.net/ubuntu/+source/txt2man/1.5.5-4ubuntu0.12.10.1
https://launchpad.net/ubuntu/+source/txt2man/1.5.5-4ubuntu0.12.04.1
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