Bug 1276335 (CVE-2015-8792)

Summary:	CVE-2015-8792 libmatroska: Out-of-bounds heap read in KaxInternalBlock::ReadData()
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dmitry, dominik, itamar, kwizart, martin.sourada
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libmatroska 1.4.4	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:44:53 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:	1276338, 1276339
Bug Blocks:

Description Adam Mariš 2015-10-29 13:36:29 UTC

KaxInternalBlock::ReadData(): Fixed an invalid memory access. When reading a block group or a simple block that uses EBML lacing the frame sizes indicated in the lacing weren't checked against the available number of bytes. If the indicated frame size was bigger than the whole block's size the parser would read beyond the end of the buffer resulting in a heap information leak.

Upstream patch:

https://github.com/Matroska-Org/libmatroska/commit/0a2d3e3644a7453b6513db2f9bc270f77943573f

Comment 1 Adam Mariš 2015-10-29 13:39:06 UTC

Created libmatroska tracking bugs for this issue:

Affects: fedora-all [bug 1276338]
Affects: epel-all [bug 1276339]

Comment 2 Andrej Nemec 2016-02-01 08:42:34 UTC

Added CVE according to http://www.cvedetails.com/cve/CVE-2015-8792

Comment 3 Product Security DevOps Team 2019-06-08 02:44:53 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.