MGASA-2019-0194

GraphicsMagick 1.3.32 is now released, fixing another 52 additional issues detected by oss-fuzz.

Of special mention is a bug reported to us by "Battle Furry" via our security mail alias. This bug (was considered to be a "feature") allows including file text as rendered text on a graphic image, or as text hidden in metadata, by using a file refered to with '@...ename' syntax where text to be rendered normally appears. This issue was inherited from ImageMagick 5.5.2 and it even appears in ImageMagick 4.2.9.

It has been determined that the SVG and WMF formats may be used to supply this '@...ename' syntax, resulting in rendered text on a graphic image, or as text hidden in metadata (e.g. the image comment). Furthermore, it may be that other applications and web sites accept text to be rendered on behalf of users and that this issue could allow untrusted users to receive content considered to be secure and private (e.g. private keys or passwords).