Security Information / 2019 / Security Information -- DSA-4377-1 rssh

Debian Security Advisory

DSA-4377-1 rssh -- 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 the stable distribution (stretch), this problem has been fixed in version 2.3.4-5+deb9u1.

We recommend that you upgrade your rssh packages.

For the detailed security status of rssh please refer to its security tracker page at: https://security-tracker.debian.org/tracker/rssh