Bug 980894 (CVE-2013-2221)

Summary:	CVE-2013-2221 libzrtpcpp: Heap-based buffer overflow when processing overly-large ZRTP packets
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	alekcejk, jrusnack, kevin, manuel.wolfshant, rcvalle
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:	2013-07-16 06:11:00 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:	980904, 980905
Bug Blocks:

Description Jan Lieskovsky 2013-07-03 13:16:43 UTC

A heap-based buffer overflow flaw was found in the way libzrtpcpp, a ZRTP support library for the GNU ccRTP stack, processed certain ZRTP packets (overly-large ZRTP packets of several types). A remote attacker could provide a specially-crafted ZRTP packet that, when processed in an application linked against libzrtpcpp would lead to that application crash or, potentially, arbitrary code execution with the privileges of the user running that application.

References:
[1] http://www.openwall.com/lists/oss-security/2013/06/29/1
[2] http://www.openwall.com/lists/oss-security/2013/06/30/2
[3] http://blog.azimuthsecurity.com/2013/06/attacking-crypto-phones-weaknesses-in.html

Relevant upstream patch:
[4] https://github.com/wernerd/ZRTPCPP/commit/c8617100f359b217a974938c5539a1dd8a120b0e

Comment 1 Jan Lieskovsky 2013-07-03 13:27:26 UTC

This issue affects the versions of the libzrtpcpp package, as shipped with Fedora release of 17 and 18. Please schedule an update.

--

This issue affects the versions of the libzrtpcpp package, as shipped with Fedora EPEL-5 and Fedora EPEL-6. Please schedule an update.

Comment 2 Jan Lieskovsky 2013-07-03 13:31:14 UTC

Created libzrtpcpp tracking bugs for this issue:

Affects: fedora-all [bug 980904]

Comment 3 Jan Lieskovsky 2013-07-03 13:34:09 UTC

Created libzrtpcpp tracking bugs for this issue:

Affects: epel-all [bug 980905]

Comment 4 Fedora Update System 2013-07-16 01:43:08 UTC

libzrtpcpp-2.3.4-1.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.