Bug 1630004 (CVE-2018-17000) - CVE-2018-17000 libtiff: NULL pointer dereference in function _TIFFmemcmp at tif_unix.c
Summary: CVE-2018-17000 libtiff: NULL pointer dereference in function _TIFFmemcmp at t...
Alias: CVE-2018-17000
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
: CVE-2019-7663 (view as bug list)
Depends On: 1630006 1630007 1630009 1630010 1630011
Blocks: 1630008 1679012
TreeView+ depends on / blocked
Reported: 2018-09-17 18:23 UTC by Pedro Sampaio
Modified: 2020-07-08 08:28 UTC (History)
17 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2018-09-24 06:15:08 UTC

Attachments (Terms of Use)

Description Pedro Sampaio 2018-09-17 18:23:43 UTC
A NULL pointer dereference in the function _TIFFmemcmp at tif_unix.c (called from TIFFWriteDirectoryTagTransferfunction) in LibTIFF 4.0.9 allows an attacker to cause a denial-of-service through a crafted tiff file. This vulnerability can be triggered by the executable tiffcp.

Upstream bug:


Comment 1 Pedro Sampaio 2018-09-17 18:24:40 UTC
Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1630006]

Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1630009]
Affects: fedora-all [bug 1630007]

Comment 3 Huzaifa S. Sidhpurwala 2018-09-24 06:11:51 UTC

It seems like the flaw was introduced after libtiff-4.0.9 was released. So this is likely a regression in the unreleased version of libtiff (current git master). Which means that any released versions of the pkg will not be affected.

Comment 4 Stefan Cornelius 2020-03-06 13:21:14 UTC
*** Bug 1677528 has been marked as a duplicate of this bug. ***

Note You need to log in before you can comment on or make changes to this bug.