1. Ubuntu Security Notices
  2. USN-4219-1

USN-4219-1: libssh vulnerability

Publication date

10 December 2019

Overview

libssh could be made to run programs under certain conditions.

Releases

Packages

  • libssh - A tiny C SSH library

Details

It was discovered that libssh incorrectly handled certain scp commands. If
a user or automated system were tricked into using a specially-crafted scp
command, a remote attacker could execute arbitrary commands on the server.

It was discovered that libssh incorrectly handled certain scp commands. If
a user or automated system were tricked into using a specially-crafted scp
command, a remote attacker could execute arbitrary commands on the server.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
19.10 eoan libssh-4 –  0.9.0-1ubuntu1.3
19.04 disco libssh-4 –  0.8.6-3ubuntu0.3
18.04 bionic libssh-4 –  0.8.0~20170825.94fa1e38-1ubuntu0.5
16.04 xenial libssh-4 –  0.6.3-4.3ubuntu0.5

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References

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