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Ubuntu Security Notice USN-2155-1

Ubuntu Security Notice USN-2155-1
Posted Mar 25, 2014
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2155-1 - Jann Horn discovered that OpenSSH incorrectly handled wildcards in AcceptEnv lines. A remote attacker could use this issue to possibly bypass certain intended environment variable restrictions.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2014-2532
SHA-256 | bdab8f1f7c649a8126f6b3e5005887d52b74e90bdcf86a7ec2876e9b2f3169bb

Ubuntu Security Notice USN-2155-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-2155-1
March 25, 2014

openssh vulnerability
============================================================================

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

- Ubuntu 13.10
- Ubuntu 12.10
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

OpenSSH incorrectly handled environment restrictions with wildcards.

Software Description:
- openssh: secure shell (SSH) for secure access to remote machines

Details:

Jann Horn discovered that OpenSSH incorrectly handled wildcards in
AcceptEnv lines. A remote attacker could use this issue to possibly bypass
certain intended environment variable restrictions.

Update instructions:

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

Ubuntu 13.10:
openssh-server 1:6.2p2-6ubuntu0.2

Ubuntu 12.10:
openssh-server 1:6.0p1-3ubuntu1.1

Ubuntu 12.04 LTS:
openssh-server 1:5.9p1-5ubuntu1.2

Ubuntu 10.04 LTS:
openssh-server 1:5.3p1-3ubuntu7.1

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

References:
http://www.ubuntu.com/usn/usn-2155-1
CVE-2014-2532

Package Information:
https://launchpad.net/ubuntu/+source/openssh/1:6.2p2-6ubuntu0.2
https://launchpad.net/ubuntu/+source/openssh/1:6.0p1-3ubuntu1.1
https://launchpad.net/ubuntu/+source/openssh/1:5.9p1-5ubuntu1.2
https://launchpad.net/ubuntu/+source/openssh/1:5.3p1-3ubuntu7.1
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