Bug 1530912 – CVE-2017-17973 libtiff: heap-based use after free in tiff2pdf.c:t2p_writeproc

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Bug 1530912 - (CVE-2017-17973) CVE-2017-17973 libtiff: heap-based use after free in tiff2pdf.c:t2p_writeproc

Summary:	CVE-2017-17973 libtiff: heap-based use after free in tiff2pdf.c:t2p_writeproc

Status:	CLOSED NOTABUG

Aliases:	CVE-2017-17973

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	impact=moderate,public=20171229,repor...
Keywords:	Security

Depends On:	1530913
Blocks:	1530914
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Reported:	2018-01-04 01:55 EST by Sam Fowler
Modified:	2018-01-21 22:52 EST (History)
CC List:	3 users (show)

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Last Closed:	2018-01-21 22:52:35 EST
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Description Sam Fowler 2018-01-04 01:55:52 EST

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 01:56:16 EST

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1530913]

Comment 2 Huzaifa S. Sidhpurwala 2018-01-21 22:52:35 EST

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.

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