The following updates has been released for Debian GNU/Linux:

Debian GNU/Linux 8 LTS:
DLA 1548-1: libssh security update
DLA 1549-1: xen security update

Debian GNU/Linux 9:
DSA 4323-1: drupal7 security update

DLA 1548-1: libssh security update

Package : libssh
Version : 0.6.3-4+deb8u3
CVE ID : CVE-2018-10933
Debian Bug : 911149

Peter Winter-Smith of NCC Group discovered that libssh, a tiny C SSH
library, contains an authentication bypass vulnerability in the server
code. An attacker can take advantage of this flaw to successfully
authenticate without any credentials by presenting the server an
SSH2_MSG_USERAUTH_SUCCESS message in place of the
SSH2_MSG_USERAUTH_REQUEST message which the server would expect to
initiate authentication.

For Debian 8 "Jessie", this problem has been fixed in version
0.6.3-4+deb8u3.

We recommend that you upgrade your libssh 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

DLA 1549-1: xen security update

Package : xen
Version : 4.4.4lts2-0+deb8u1
CVE ID : CVE-2017-14316 CVE-2017-14317 CVE-2017-14319 CVE-2017-15588
CVE-2017-15589 CVE-2017-15590 CVE-2017-15597 CVE-2017-17046
CVE-2017-17563 CVE-2017-17564 CVE-2017-17565 CVE-2017-17566
CVE-2018-10471 CVE-2018-10982

Multiple vulnerabilities have been discovered in the Xen hypervisor, which
could result in denial of service, informations leaks or privilege
escalation.

For Debian 8 "Jessie", these problems have been fixed in version
4.4.4lts2-0+deb8u1.

We recommend that you upgrade your xen 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

DSA 4323-1: drupal7 security update

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4323-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
October 18, 2018 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : drupal7
CVE ID : not yet available

Two vulnerabilities were found in Drupal, a fully-featured content
management framework, which could result in arbitrary code execution or
an open redirect. For additional information, please refer to the
upstream advisory at https://www.drupal.org/sa-core-2018-006

For the stable distribution (stretch), this problem has been fixed in
version 7.52-2+deb9u5.

We recommend that you upgrade your drupal7 packages.

For the detailed security status of drupal7 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/drupal7

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/