USN-2164-1: OpenSSH vulnerability

Releases

• Ubuntu 13.10
• Ubuntu 12.10
• Ubuntu 12.04

Packages

• openssh - secure shell (SSH) for secure access to remote machines

Details

Matthew Vernon discovered that OpenSSH did not correctly check SSHFP DNS
records if a server presented an unacceptable host certificate. A malicious
server could use this issue to disable SSHFP checking.

Update instructions

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

Ubuntu 13.10

• openssh-client - 1:6.2p2-6ubuntu0.3

Ubuntu 12.10

• openssh-client - 1:6.0p1-3ubuntu1.2

Ubuntu 12.04

• openssh-client - 1:5.9p1-5ubuntu1.3

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

References

• CVE-2014-2653