SynopsisThe remote Amazon Linux AMI host is missing a security update.
DescriptionThis ALAS is superceded by ALAS-2014-419.
A flaw was found in the way Bash evaluated certain specially crafted environment variables. An attacker could use this flaw to override or bypass environment restrictions to execute shell commands. Certain services and applications allow remote unauthenticated attackers to provide environment variables, allowing them to exploit this issue.
We'd like to also give credit to our colleagues at Red Hat for their excellent blog post summarizing this issue.
This ALAS is superceded by ALAS-2014-419.
SolutionRun 'yum update bash' to update your system.