It was discovered that an integer overflow in libwmf, the library to read Windows Metafile Format files, can be exploited to execute arbitrary code if a crafted WMF file is parsed.
For the stable distribution (sarge) this problem has been fixed in version 0.2.8.3-2sarge1.
For the unstable distribution (sid) this problem has been fixed in version 0.2.8.4-2.
We recommend that you upgrade your libwmf package.
MD5 checksums of the listed files are available in the original advisory.