Amazon Linux AMI Security Advisory: ALAS-2013-245
Advisory Release Date: 2014-09-16 21:53 Pacific
It was discovered that gc's implementation of the malloc() and calloc() routines did not properly perform parameter sanitization when allocating memory. If an application using gc did not implement application-level validity checks for the malloc() and calloc() routines, a remote attacker could provide specially crafted application-specific input, which, when processed by the application, could lead to an application crash or, potentially, arbitrary code execution with the privileges of the user running the application. (CVE-2012-2673 )
Run yum update gc to update your system.