USN-3885-1: OpenSSH vulnerabilities

7 February 2019

openssh vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in OpenSSH.

Software Description

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

Details

Harry Sintonen discovered multiple issus in the OpenSSH scp utility. If a user or automated system were tricked into connecting to an untrusted server, a remote attacker could possibly use these issues to write to arbitrary files, change directory permissions, and spoof client output.

Update instructions

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

Ubuntu 18.10
openssh-client - 1:7.7p1-4ubuntu0.2
Ubuntu 18.04 LTS
openssh-client - 1:7.6p1-4ubuntu0.2
Ubuntu 16.04 LTS
openssh-client - 1:7.2p2-4ubuntu2.7
Ubuntu 14.04 LTS
openssh-client - 1:6.6p1-2ubuntu2.12

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