Bug 1318185 (CVE-2016-1621)

Summary:	CVE-2016-1621 libvpx: remote code execution via crafted media file
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	klember, tcallawa, wtaymans
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-04-05 09:01:38 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:	1318187, 1318188, 1318189
Bug Blocks:	1318190

Description Andrej Nemec 2016-03-16 08:59:33 UTC

A vulnerability was found in libvpx. A maliciously crafted media file allows remote attackers to execute arbitrary code or cause a denial of service. 

Upstream fix:

https://android.googlesource.com/platform/external/libvpx/+/04839626ed859623901ebd3a5fd483982186b59d%5E!/#F1

References:

http://lwn.net/Vulnerabilities/680036/

Comment 1 Andrej Nemec 2016-03-16 09:00:34 UTC

Created compat-libvpx1 tracking bugs for this issue:

Affects: fedora-23 [bug 1318188]

Comment 2 Andrej Nemec 2016-03-16 09:00:40 UTC

Created libvpx tracking bugs for this issue:

Affects: fedora-all [bug 1318187]
Affects: epel-5 [bug 1318189]

Comment 3 Tomas Hoger 2016-04-05 09:01:38 UTC

There does not seem to be any technical details public about this issue.  There is this Android security bulletin:

http://source.android.com/security/bulletin/2016-03-01.html#remote_code_execution_vulnerabilities_in_libvpx

linking the following commits:

https://android.googlesource.com/platform/frameworks/av/+/5a6788730acfc6fd8f4a6ef89d2c376572a26b55
https://android.googlesource.com/platform/external/libvpx/+/04839626ed859623901ebd3a5fd483982186b59d
https://android.googlesource.com/platform/external/libvpx/+/5a9753fca56f0eeb9f61e342b2fccffc364f9426

Apparently, the problem fixed is in the libwebm library embedded in libvpx.  As libvpx versions in Red Hat Enterprise Linux 6 and 7 pre-date inclusion of libwebm in libvpx, they can not be affected by this issue.  Similar applies to libvpx in EPEL-5 or compat-libvpx1 in Fedora.