Bug 1966830 (CVE-2021-29964)

Summary:	CVE-2021-29964 Mozilla: Out of bounds-read when parsing a `WM_COPYDATA` message
Product:	[Other] Security Response	Reporter:	Doran Moppert <dmoppert>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	erack, jhorak, nobody, stransky, tpopela
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 78.11, thunderbird 78.11	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-02 05:32:04 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:
Bug Blocks:	1964432

Description Doran Moppert 2021-06-02 01:20:32 UTC

A locally-installed hostile program could send `WM_COPYDATA` messages that Firefox would processing incorrectly, leading to an out-of-bounds read.


*This bug only affects Firefox on Windows. Other operating systems are unaffected.*



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2021-24/#CVE-2021-29964

Comment 1 Product Security DevOps Team 2021-06-02 05:32:04 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-29964