xymon - security update

Markus Krell discovered that xymon, a network- and
applications-monitoring system, was vulnerable to the following
security issues:

• CVE-2016-2054
  The incorrect handling of user-supplied input in the config
  command can trigger a stack-based buffer overflow, resulting in
  denial of service (via application crash) or remote code execution.
• CVE-2016-2055
  The incorrect handling of user-supplied input in the config
  command can lead to an information leak by serving sensitive
  configuration files to a remote user.
• CVE-2016-2056
  The commands handling password management do not properly validate
  user-supplied input, and are thus vulnerable to shell command
  injection by a remote user.
• CVE-2016-2057
  Incorrect permissions on an internal queuing system allow a user
  with a local account on the xymon master server to bypass all
  network-based access control lists, and thus inject messages
  directly into xymon.
• CVE-2016-2058
  Incorrect escaping of user-supplied input in status webpages can
  be used to trigger reflected cross-site scripting attacks.

For the stable distribution (jessie), these problems have been fixed in
version 4.3.17-6+deb8u1.

We recommend that you upgrade your xymon packages.