Source: imagemagick Version: 8:6.9.7.4+dfsg-13 Severity: important Tags: security upstream X-Debbugs-CC: t...@security.debian.org control: found -1 8:6.8.9.9-5+deb8u8 control: found -1 8:6.8.9.9-5+deb8u9 control: found -1 8:6.7.7.10-5+deb7u14 forwarded:https://github.com/ImageMagick/ImageMagick/issues/362
An issue #131 an out of bounds read involving the mat image format has been fixed. After the fixing commits the buffer bImgBuff is large enough to deal with the PoC file that lead to issue #131. However, after the fix the coder still accesses uninitialized data which might pose a security issue or at least a bug. The first undefined access happens within coders/mat.c:1196 in a call to calcMinMax(). The back part of the buffer bImgBuff is now large enough but does seemingly not contain any sensible data.
