==========================================================================
Ubuntu Security Notice USN-4219-1
December 10, 2019
libssh vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 19.10
– Ubuntu 19.04
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
Summary:
libssh could be made to run programs under certain conditions.
Software Description:
– 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.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.10:
libssh-4 0.9.0-1ubuntu1.3
Ubuntu 19.04:
libssh-4 0.8.6-3ubuntu0.3
Ubuntu 18.04 LTS:
libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.5
Ubuntu 16.04 LTS:
libssh-4 0.6.3-4.3ubuntu0.5
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4219-1
CVE-2019-14889
Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.9.0-1ubuntu1.3
https://launchpad.net/ubuntu/+source/libssh/0.8.6-3ubuntu0.3
https://launchpad.net/ubuntu/+source/libssh/0.8.0~20170825.94fa1e38-1ubuntu0.5
https://launchpad.net/ubuntu/+source/libssh/0.6.3-4.3ubuntu0.5
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