Bug 1884474 (CVE-2020-15667)

Summary:	CVE-2020-15667 firefox: Invalid name length could result in a heap buffer overflow, leading to memory corruption
Product:	[Other] Security Response	Reporter:	Michael Kaplan <mkaplan>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	cschalle, gecko-bugs-nobody, jhorak, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	firefox 80	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-10-05 03:58:14 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:	1884475

Description Michael Kaplan 2020-10-02 06:42:28 UTC

When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap buffer overflow, leading to memory corruption and potentially arbitrary code execution. Within Firefox as released by Mozilla, this issue is only exploitable with the Mozilla-controlled signing key. This vulnerability affects Firefox < 80.


References: 

https://bugzilla.mozilla.org/show_bug.cgi?id=1653371
https://www.mozilla.org/security/advisories/mfsa2020-36/

Comment 1 Michael Kaplan 2020-10-02 06:42:31 UTC

External References:

https://www.mozilla.org/security/advisories/mfsa2020-36/

Comment 2 Huzaifa S. Sidhpurwala 2020-10-05 03:58:18 UTC

Statement:

Firefox and thunderbird packages shipped with Red Hat Enterprise Linux do not enable automatic updates. Therefore are not affected by this flaw.