acm, a multi-player aerial combat simulation, uses a network protocol based on the same RPC implementation used in many C libraries. This implementation was found to contain an integer overflow vulnerability which could be exploited to execute arbitrary code.
For the stable distribution (woody) this problem has been fixed in version 5.0-3.woody.1.
For the unstable distribution (sid) this problem has been fixed in version 5.0-10.
We recommend that you update your acm package.
MD5 checksums of the listed files are available in the original advisory.