Debian Security Advisory

DSA-3495-1 xymon -- security update

Date Reported:
29 Feb 2016
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2016-2054, CVE-2016-2055, CVE-2016-2056, CVE-2016-2057, CVE-2016-2058.
More information:

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.