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Date : Mon, 29 Sep 2014 17:58:55 +0200
Type : VULN
Sujet : CERT-Renater : 2014/VULN205 (Ubuntu : USN-2364-1 Bash vulnerabilities, CVE-2014-7186, CVE-2014-7187)
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                           CERT-Renater

               Note d'Information No. 2014/VULN205
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DATE                : 29/09/2014

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S):  Ubuntu versions 14.04 LTS, 12.04 LTS, 10.04 LTS.

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http://www.ubuntu.com/usn/usn-2364-1
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USN-2364-1: Bash vulnerabilities
Ubuntu Security Notice USN-2364-1
27th September, 2014

bash vulnerabilities

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

Ubuntu 14.04 LTS
Ubuntu 12.04 LTS
Ubuntu 10.04 LTS

Summary

Several security issues were fixed in Bash.

Software description

bash - GNU Bourne Again SHell

Details

Florian Weimer and Todd Sabin discovered that the Bash parser
incorrectly handled memory. An attacker could possibly use this issue to
bypass certain environment restrictions and execute arbitrary code.
(CVE-2014-7186, CVE-2014-7187)

In addition, this update introduces a hardening measure which adds
prefixes and suffixes around environment variable names which contain
shell functions.


Update instructions

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

Ubuntu 14.04 LTS:
bash 4.3-7ubuntu1.4
Ubuntu 12.04 LTS:
bash 4.2-2ubuntu2.5
Ubuntu 10.04 LTS:
bash 4.1-2ubuntu3.4

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

CVE-2014-7186, CVE-2014-7187

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https://services.renater.fr/ssi/
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