[Pkg-gmagick-im-team] Bug#894848: imagemagick: CVE-2018-9133: Excessive iteration in DecodeLabImage and EncodeLabImage

[Salvatore Bonaccorso]

Source: imagemagick
Version: 8:6.8.9.9-5
Severity: important
Tags: patch security upstream
Forwarded: https://github.com/ImageMagick/ImageMagick/issues/1072

Hi,

The following vulnerability was published for imagemagick:

CVE-2018-9133[0]:
| ImageMagick 7.0.7-26 Q16 has excessive iteration in the DecodeLabImage
| and EncodeLabImage functions (coders/tiff.c), which results in a hang
| (tens of minutes) with a tiny PoC file. Remote attackers could leverage
| this vulnerability to cause a denial of service via a crafted tiff
| file.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2018-9133
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9133
[1] https://github.com/ImageMagick/ImageMagick/issues/1072

Regards,
Salvatore