Multiple security issues have been found in the Xen virtualisation
solution:

It was discovered that CUPS, the Common UNIX Printing System, is
vulnerable to a remotely triggerable privilege escalation via cross-site
scripting and bad print job submission used to replace cupsd.conf on the
CUPS server.

Alexander E. Patrakov discovered an issue in strongSwan, an IKE/IPsec
suite used to establish IPsec protected links.

Multiple vulnerabilities have been discovered in PHP:

This is a notice that the Debian Security Team has changed its PGP/GPG
contact key because of a periodic regular key rollover.

It was discovered that redis, a persistent key-value database, could
execute insecure Lua bytecode by way of the EVAL command. This could
allow remote attackers to break out of the Lua sandbox and execute
arbitrary code.

An information disclosure flaw due to incorrect JkMount/JkUnmount
directives processing was found in the Apache 2 module mod_jk to forward
requests from the Apache web server to Tomcat. A JkUnmount rule for a
subtree of a previous JkMount rule could be ignored. This could allow a
remote attacker to potentially access a private artifact in a tree that
would otherwise not be accessible to them.

Multiple vulnerabilities were discovered in the dissectors/parsers for
LBMR, web sockets, WCP, X11, IEEE 802.11 and Android Logcat, which could
result in denial of service.

Jakub Zalas discovered that Symfony, a framework to create websites and
web applications, was vulnerable to restriction bypass. It was
affecting applications with ESI or SSI support enabled, that use the
FragmentListener. A malicious user could call any controller via the
/_fragment path by providing an invalid hash in the URL (or removing
it), bypassing URL signing and security rules.

Ansgar Burchardt discovered that the Git plugin for FusionForge, a
web-based project-management and collaboration software, does not
sufficiently validate user provided input as parameter to the method to
create secondary Git repositories. A remote attacker can use this flaw
to execute arbitrary code as root via a specially crafted URL.