ImageMagick before 7.0.5-2 and GraphicsMagick before 1.3.24 use uninitialized memory in the RLE decoder, allowing an attacker to leak sensitive information from process memory space, as demonstrated by remote attacks against ImageMagick code in a long-running server process that converts image data on behalf of multiple users. This is caused by a missing initialization step in the ReadRLEImage function in coders/rle.c.
https://scarybeastsecurity.blogspot.com/2017/05/bleed-continues-18-byte-file-14k-bounty.html
https://lists.debian.org/debian-lts-announce/2018/08/msg00002.html
https://github.com/ImageMagick/ImageMagick/commit/1c358ffe0049f768dd49a8a889c1cbf99ac9849b
http://www.securityfocus.com/bid/98593
http://www.debian.org/security/2017/dsa-3863
http://hg.code.sf.net/p/graphicsmagick/code/diff/0a5b75e019b6/coders/rle.c