Amazon Linux AMI Security Advisory: ALAS-2013-165
Advisory Release Date: 2014-09-15 22:36 Pacific
Due to the way the pam_ssh_agent_auth PAM module was built, the glibc's error() function was called rather than the intended error() function in pam_ssh_agent_auth to report errors. As these two functions expect different arguments, it was possible for an attacker to cause an application using pam_ssh_agent_auth to crash, disclose portions of its memory or, potentially, execute arbitrary code. (CVE-2012-5536 )
Run yum update openssh to update your system.