Bug 1291585 (CVE-2015-7210)

Summary: CVE-2015-7210 Mozilla: Use-after-free in WebRTC when datachannel is used after being destroyed (MFSA 2015-138)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedCC: cschalle, jhorak, jrusnack, security-response-team, stransky
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2016-01-04 06:25:42 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1290704    

Description Huzaifa S. Sidhpurwala 2015-12-15 08:40:29 UTC 
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 18:23:36 UTC 
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