Important: cyrus-imapd

Issue Overview:

The cyrus-imapd packages contain a high-performance mail server with IMAP, POP3, NNTP, and Sieve support.

A buffer overflow flaw was found in the cyrus-imapd NNTP server, nntpd. A remote user able to use the nntpd service could use this flaw to crash the nntpd child process or, possibly, execute arbitrary code with the privileges of the cyrus user. (CVE-2011-3208)

Users of cyrus-imapd are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the update, cyrus-imapd will be restarted automatically.

Affected Packages:

cyrus-imapd

Issue Correction:
Run yum update cyrus-imapd to update your system.

New Packages:

i686:  
    cyrus-imapd-debuginfo-2.3.16-6.4.amzn1.i686  
    cyrus-imapd-utils-2.3.16-6.4.amzn1.i686  
    cyrus-imapd-devel-2.3.16-6.4.amzn1.i686  
    cyrus-imapd-2.3.16-6.4.amzn1.i686  
  
src:  
    cyrus-imapd-2.3.16-6.4.amzn1.src  
  
x86_64:  
    cyrus-imapd-debuginfo-2.3.16-6.4.amzn1.x86_64  
    cyrus-imapd-devel-2.3.16-6.4.amzn1.x86_64  
    cyrus-imapd-2.3.16-6.4.amzn1.x86_64  
    cyrus-imapd-utils-2.3.16-6.4.amzn1.x86_64  

Additional References

Red Hat: CVE-2011-3208

Mitre: CVE-2011-3208