Bug 2186107 (CVE-2023-29542)

Summary:	CVE-2023-29542 Mozilla: Bypass of file download extension restrictions
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	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 102.10, thunderbird 102.10	Doc Type:	---
Doc Text:	The Mozilla Foundation Security Advisory describes this flaw as: A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-04-12 13:36:05 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:	2183233

Description Dhananjay Arunesh 2023-04-12 06:24:09 UTC

A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk  with .download. This could have led to accidental execution of malicious code.

*This bug only affects Firefox on Windows. Other versions of Firefox are unaffected.*

External Reference:
https://www.mozilla.org/en-US/security/advisories/mfsa2023-14/#CVE-2023-29542

Comment 1 Product Security DevOps Team 2023-04-12 13:36:03 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-2023-29542