[Secure-testing-team] Bug#872576: graphicsmagick: CVE-2017-12935: nvalid memory read in SetImageColorCallBack (image.c)

[Salvatore Bonaccorso]

Source: graphicsmagick
Version: 1.3.26-5
Severity: important
Tags: patch security upstream

Hi,

the following vulnerability was published for graphicsmagick.

CVE-2017-12935[0]:
| The ReadMNGImage function in coders/png.c in GraphicsMagick 1.3.26
| mishandles large MNG images, leading to an invalid memory read in the
| SetImageColorCallBack function in magick/image.c.

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-2017-12935
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-12935
[1] http://www.openwall.com/lists/oss-security/2017/08/18/4
[2] http://hg.code.sf.net/p/graphicsmagick/code/rev/cd699a44f188

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore