[Secure-testing-team] Bug#873879: tiff: CVE-2017-13727

[Salvatore Bonaccorso]

Source: tiff
Version: 4.0.3-12.3
Severity: important
Tags: patch security upstream
Forwarded: http://bugzilla.maptools.org/show_bug.cgi?id=2728

Hi,

the following vulnerability was published for tiff.

CVE-2017-13727[0]:
| There is a reachable assertion abort in the function
| TIFFWriteDirectoryTagSubifd() 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-2017-13727
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13727
[1] http://bugzilla.maptools.org/show_bug.cgi?id=2728
[2] https://github.com/vadz/libtiff/commit/b6af137bf9ef852f1a48a50a5afb88f9e9da01cc

Regards,
Salvatore