[Secure-testing-team] Bug#873880: tiff: CVE-2017-13726

[Salvatore Bonaccorso]

Source: tiff
Version: 4.0.3-12.3
Severity: important
Tags: security upstream patch
Forwarded: http://bugzilla.maptools.org/show_bug.cgi?id=2727

Hi,

the following vulnerability was published for tiff.

CVE-2017-13726[0]:
| There is a reachable assertion abort in the function
| TIFFWriteDirectorySec() in LibTIFF 4.0.8, related to tif_dirwrite.c and
| a SubIFD tag. A crafted input will lead to a remote denial of service
| attack.

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-2017-13726
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13726
[1] http://bugzilla.maptools.org/show_bug.cgi?id=2727
[2] https://github.com/vadz/libtiff/commit/f91ca83a21a6a583050e5a5755ce1441b2bf1d7e

Regards,
Salvatore