Andrei Nigmatulin discovered a buffer overflow in the PSD image-decoding module of ImageMagick, a commonly used image manipulation library. Remote exploitation with a carefully crafted image could lead to the execution of arbitrary code.
For the stable distribution (woody) this problem has been fixed in version 188.8.131.52-1woody5.
For the unstable distribution (sid) this problem has been fixed in version 184.108.40.206-2.
We recommend that you upgrade your imagemagick packages.