Bug 1555155 (CVE-2018-7728)

Summary:	CVE-2018-7728 exempi: Heap-based buffer overflow in third-party/zuid/interfaces/MD5.cpp:MD5Update() allows for denial of service via crafted TIFF image
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dakingun, jchaloup, nforro, sfowler
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	exempi 2.4.5	Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds read vulnerability has been discovered in Exempi in the way it handles Extensible Metadata Platform (XMP) data in TIFF images. An attacker could cause a denial of service by convincing a user to open a crafted TIFF image file.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-04-30 07:25:30 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:	1555156, 1555157, 1555169
Bug Blocks:	1555158

Description Sam Fowler 2018-03-14 04:15:40 UTC

Exempi through version 2.4.4 is vulnerable to a heap-based buffer overflow in third-party/zuid/interfaces/MD5.cpp:MD5Update() caused by a mishandled case of zero length in XMPFiles/source/FileHandlers/TIFF_Handler.cpp. An attacker could exploit this to cause a denial of service via crafted TIFF image file.


Upstream Bug Report:

https://bugs.freedesktop.org/show_bug.cgi?id=105205


Upstream Patch:

https://cgit.freedesktop.org/exempi/commit/?id=e163667a06a9b656a047b0ec660b871f29a83c9f

Comment 1 Sam Fowler 2018-03-14 04:16:19 UTC

Created exempi tracking bugs for this issue:

Affects: fedora-all [bug 1555156]