Amazon Linux AMI Security Advisory: ALAS-2012-126
Advisory Release Date: 2014-09-14 17:26 Pacific
Multiple flaws were found in the way libexif processed Exif tags. An attacker could create a specially-crafted image file that, when opened in an application linked against libexif, could cause the application to crash or, potentially, execute arbitrary code with the privileges of the user running the application.
Run yum update libexif to update your system.