Bug 1530912 (CVE-2017-17973)

Summary:	CVE-2017-17973 libtiff: heap-based use after free in tiff2pdf.c:t2p_writeproc
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	nforro, phracek, tgl
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-01-22 03:52:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1530913, 1910610
Bug Blocks:	1530914

Description Sam Fowler 2018-01-04 06:55:52 UTC

In LibTIFF 4.0.8, there is a heap-based use-after-free in the t2p_writeproc function in tiff2pdf.c

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-17973
http://www.cvedetails.com/cve/CVE-2017-17973/
http://bugzilla.maptools.org/show_bug.cgi?id=2769

Comment 1 Sam Fowler 2018-01-04 06:56:16 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1530913]

Comment 2 Huzaifa S. Sidhpurwala 2018-01-22 03:52:35 UTC

Analysis:

I am not able to reproduce this on any version of libtiff shipped with Red Hat Enterprise Linux or with the upstream version compiled with ASAN. Currently there is no response from upstream nor any response from the reporter of this flaw.

I am going to mark this issue as notaffected, until there is more information available.