Debian Security Advisory

DLA-751-1 nagios3 -- LTS security update

Date Reported:
17 Dec 2016
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2016-9565, CVE-2016-9566.
More information:

Nagios was found to be vulnerable to two security issues that, when combined, lead to a remote root code execution vulnerability. Fortunately, the hardened permissions of the Debian package limit the effect of those to information disclosure, but privilege escalation to root is still possible locally.

  • CVE-2016-9565

    Improper sanitization of RSS feed input enables unauthenticated remote read and write of arbitrary files which may lead to remote code execution if the web root is writable.

  • CVE-2016-9566

    Unsafe logfile handling allows unprivileged users to escalate their privileges to root. In wheezy, this is possible only through the debug logfile which is disabled by default.

For Debian 7 Wheezy, these problems have been fixed in version 3.4.1-3+deb7u3.

We recommend that you upgrade your nagios3 packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: