Bug 1291585 – CVE-2015-7210 Mozilla: Use-after-free in WebRTC when datachannel is used after being destroyed (MFSA 2015-138)

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Bug 1291585 - (CVE-2015-7210) CVE-2015-7210 Mozilla: Use-after-free in WebRTC when datachannel is used after being destroyed (MFSA 2015-138)

Summary:	CVE-2015-7210 Mozilla: Use-after-free in WebRTC when datachannel is used afte...

Status:	CLOSED ERRATA

Aliases:	CVE-2015-7210

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	urgent Severity urgent
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=critical,public=20151216,repor...
Keywords:	Security

Depends On:
Blocks:	1290704
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Reported:	2015-12-15 03:40 EST by Huzaifa S. Sidhpurwala
Modified:	2016-01-05 05:00 EST (History)
CC List:	5 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-01-04 01:25:42 EST
Type:	---
Regression:	---
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Documentation:	---
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2015:2657	normal	SHIPPED_LIVE	Critical: firefox security update	2015-12-16 18:20:40 EST

Groups: None (edit)

Description Huzaifa S. Sidhpurwala 2015-12-15 03:40:29 EST

Security researcher Looben Yang reported a use-after-free error in WebRTC that occurs due to timing issues in WebRTC when closing channels. WebRTC may still believe is has a datachannel open after another WebRTC function has closed it. This results in attempts to use the now destroyed datachannel, leading to a potentially exploitable crash. 


External Reference:

https://www.mozilla.org/security/announce/2015/mfsa2015-138.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Looben Yang as the original reporter.

Comment 1 errata-xmlrpc 2015-12-16 13:23:36 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 5

Via RHSA-2015:2657 https://rhn.redhat.com/errata/RHSA-2015-2657.html

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