amd: This daemon automatically mounts file systems in response to attempts to access files that reside on those file systems. Similar functionality on some systems is provided by a daemon named automountd. Linux and BSD oriented systems are especially vulnerable.
A remote intruder can execute commands, as root if the buffer overflow attack is successful.
The amd (or automountd) daemon is exploitable for remote root access. Versions are vulnerable to a buffer overflow attack where a well crafted pattern could execute arbitrary commands as the root user.
CERT released CA-99-12 advisory on this topic.