Tavis Ormandy discovered that the embedded GD library copy in libwmf, a library to parse windows metafiles (WMF), makes use of a pointer after it was already freed. An attacker using a crafted WMF file can cause a denial of service or possibly the execute arbitrary code via applications using this library.
Credit:
The information has been provided by Nico Golde.
Patch Availability:
* For the oldstable distribution (etch), this problem has been fixed in version 0.2.8.4-2+etch1.
* For the stable distribution (lenny), this problem has been fixed in version 0.2.8.4-6+lenny1.
* For the testing distribution (squeeze), this problem will be fixed soon.
* For the unstable distribution (sid), this problem has been fixed in version 0.2.8.4-6.1.
