Goldberg, Miro Haller, Nadia Heninger, Mike Milano, Dan Shumow, Marc
Stevens, and Adam Suhl discovered that FreeRADIUS incorrectly authenticated
certain responses. An attacker able to intercept communications between a
RADIUS client and server could possibly use this issue to forge responses,
bypass authentication, and access network devices and services.
This update introduces new configuration options called “limit_proxy_state”
and “require_message_authenticator” that default to “auto” but should be
set to “yes” once all RADIUS devices have been upgraded on a network.
It was discovered that ImageMagick incorrectly handled certain malformed
image files. If a user or automated system using ImageMagick were tricked
into opening a specially crafted image, an attacker could exploit this to
cause a denial of service or potentially leak sensitive information.
These vulnerabilities included heap and stack-based buffer overflows,
memory leaks, and improper handling of uninitialized values.
It was discovered that unzip did not properly handle unicode strings under
certain circumstances. If a user were tricked into opening a specially
crafted zip file, an attacker could possibly use this issue to cause unzip
to crash, resulting in a denial of service, or possibly execute arbitrary
code.
