Georgi Guninski discovered a problem in ethereal, a network traffic analyzer. The program contains a format string vulnerability that could probably lead to execution of arbitrary code.
For the stable distribution (woody) this problem has been fixed in version 0.9.4-1woody3.
The old stable distribution (potato) does not seem to be affected by this problem.
For the unstable distribution (sid) this problem has been fixed in version 0.9.9-2.
We recommend that you upgrade your ethereal packages.
MD5 checksums of the listed files are available in the original advisory.