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...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-17000
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
: 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:
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Last Closed: 2018-09-24 06:15:08 UTC
Embargoed:

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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:

http://bugzilla.maptools.org/show_bug.cgi?id=2811
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 
Analysis:

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. ***
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