Debian Security Advisory

DSA-2318-1 cyrus-imapd-2.2 -- multiple vulnerabilities

Date Reported:
06 Oct 2011
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2011-3372, CVE-2011-3208.
More information:

Multiple security issues have been discovered in cyrus-imapd, a highly scalable mail system designed for use in enterprise environments. The Common Vulnerabilities and Exposures project identifies the following problems:

  • CVE-2011-3208

    Coverity discovered a stack-based buffer overflow in the NNTP server implementation (nttpd) of cyrus-imapd. An attacker can exploit this flaw via several crafted NNTP commands to execute arbitrary code.

  • CVE-2011-3372

    Stefan Cornelius of Secunia Research discovered that the command processing of the NNTP server implementation (nttpd) of cyrus-imapd is not properly implementing access restrictions for certain commands and is not checking for a complete, successful authentication. An attacker can use this flaw to bypass access restrictions for some commands and, e.g. exploit CVE-2011-3208 without proper authentication.

For the oldstable distribution (lenny), this problem has been fixed in version 2.2_2.2.13-14+lenny5.

For the stable distribution (squeeze), this problem has been fixed in version 2.2_2.2.13-19+squeeze2.

For the testing distribution (wheezy), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in cyrus-imapd-2.4 version 2.4.12-1.

We recommend that you upgrade your cyrus-imapd-2.2 packages.