Debian Long Term Support / LTS Security Information / 2019 / Security Information -- DLA-1650-1 rssh

Debian Security Advisory

DLA-1650-1 rssh -- LTS security update

Date Reported:

30 Jan 2019

Affected Packages:

rssh

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 919623.
In Mitre's CVE dictionary: CVE-2019-1000018.

More information:

The ESnet security team discovered a vulnerability in rssh, a restricted shell that allows users to perform only scp, sftp, cvs, svnserve (Subversion), rdist and/or rsync operations. Missing validation in the scp support could result in the bypass of this restriction, allowing the execution of arbitrary shell commands.

Please note that with the update applied, the "-3" option of scp can no longer be used.

For Debian 8 Jessie, this problem has been fixed in version 2.3.4-4+deb8u1.

We recommend that you upgrade your rssh packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS