Bug 1577311 (CVE-2018-10779)

Summary:	CVE-2018-10779 libtiff: heap-based buffer over-read in TIFFWriteScanline function in tif_write.c
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	erik-fedora, mike, 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:	An integer overflow has been discovered in libtiff in TIFFSetupStrips:tif_write.c, which could lead to a heap-based buffer overflow in TIFFWriteScanline:tif_write.c. An attacker may use this vulnerability to corrupt memory or cause Denial of Service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 19:18:45 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:	1577314, 1577315, 1577316, 1577317, 1577393, 1598503
Bug Blocks:	1577318

Description Laura Pardo 2018-05-11 17:09:49 UTC

A flaw was found in LibTIFF 3.8.2 in TIFFWriteScanline function in tif_write.c. A heap-based buffer over-read, as demonstrated by bmp2tiff.


References:
http://bugzilla.maptools.org/show_bug.cgi?id=2788

Comment 1 Laura Pardo 2018-05-11 17:10:37 UTC

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1577316]


Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1577314]
Affects: fedora-all [bug 1577315]

Comment 4 Riccardo Schirone 2018-07-05 16:02:30 UTC

An integer overflow when computing the size of `td->td_stripbytecount` in TIFFSetupStrips allocates a buffer smaller than what is necessary, thus leading to a heap-based buffer overflow in TIFFWriteScanline when accessing the array.

Comment 7 errata-xmlrpc 2019-08-06 12:08:53 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2053 https://access.redhat.com/errata/RHSA-2019:2053

Comment 8 Product Security DevOps Team 2019-08-06 19:18:45 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-10779