Debian: DSA-4377-3 Moderate: rssh Security Fix for CVE-2019-1000018

The restrictions introduced in the security fix to address
CVE-2019-1000018 also disallowed the -pf and -pt options which are used
by the scp support in libssh2. This update restores support for those.

For the stable distribution (stretch), this problem has been fixed in
version 2.3.4-5+deb9u4.

We recommend that you upgrade your rssh packages.

For the detailed security status of rssh please refer to
its security tracker page at:

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