Bug 1496649 (CVE-2017-7793)

Summary:	CVE-2017-7793 Mozilla: Use-after-free with Fetch API (MFSA 2017-22)
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, security-response-team, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2017-10-11 23:51:23 UTC	Type:	---
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1494903

Description Doran Moppert 2017-09-28 04:19:47 UTC

A use-after-free vulnerability can occur in the Fetch API when the worker or the associated window are freed when still in use, resulting in a potentially exploitable crash.


External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/#CVE-2017-7793

Comment 2 Doran Moppert 2017-09-28 05:00:36 UTC

Acknowledgments:

Name: the Mozilla project
Upstream: Abhishek Arya

Comment 3 Tomas Hoger 2017-09-28 18:45:15 UTC

Public now via upstream advisories:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-22/
https://www.mozilla.org/en-US/security/advisories/mfsa2017-21/

Comment 4 errata-xmlrpc 2017-09-28 23:48:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:2831 https://access.redhat.com/errata/RHSA-2017:2831

Comment 5 errata-xmlrpc 2017-10-11 23:40:42 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 7

Via RHSA-2017:2885 https://access.redhat.com/errata/RHSA-2017:2885