Amazon Linux AMI Security Advisory: ALAS-2012-51
Advisory Release Date: 2012-03-04 16:12 Pacific
Advisory Updated Date: 2014-09-14 15:39 Pacific
A heap-based buffer overflow flaw was found in the way the CVS client handled responses from HTTP proxies. A malicious HTTP proxy could use this flaw to cause the CVS client to crash or, possibly, execute arbitrary code with the privileges of the user running the CVS client. (CVE-2012-0804)
Run yum update cvs to update your system.