CVE-2023-5174

Published: 27 September 2023

If Windows failed to duplicate a handle during process creation, the sandbox code may have inadvertently freed a pointer twice, resulting in a use-after-free and a potentially exploitable crash. *This bug only affects Firefox on Windows when run in non-standard configurations (such as using `runas`). Other operating systems are unaffected.* This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

Notes

Author	Note
tyhicks	mozjs contains a copy of the SpiderMonkey JavaScript engine
mdeslaur	starting with Ubuntu 22.04, the firefox package is just a script that installs the Firefox snap
rodrigo-zaiden	Windows only issue

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support)
	focal	Not vulnerable (windows only)
	jammy	Not vulnerable (code not present)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Not vulnerable (code not present)
	noble	Not vulnerable (code not present)
	trusty	Ignored (end of standard support)
	upstream	Not vulnerable (debian: Only affects Firefox on Windows)
	xenial	Ignored (end of standard support)
mozjs102 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Ignored (end of life, was needs-triage)
	mantic	Needs triage
	noble	Needs triage
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs38 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Does not exist
	jammy	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	noble	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs52 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	jammy	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	noble	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs68 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Needs triage
	jammy	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	noble	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs78 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Ignored (end of life, was needs-triage)
	mantic	Does not exist
	noble	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs91 Launchpad, Ubuntu, Debian	bionic	Does not exist
	focal	Does not exist
	jammy	Needs triage
	lunar	Does not exist
	mantic	Does not exist
	noble	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
thunderbird Launchpad, Ubuntu, Debian	bionic	Ignored (end of standard support)
	focal	Not vulnerable (windows only)
	jammy	Not vulnerable (windows only)
	lunar	Ignored (end of life, was needs-triage)
	mantic	Not vulnerable (windows only)
	noble	Not vulnerable (windows only)
	trusty	Ignored (end of standard support)
	upstream	Not vulnerable (debian: Only affects Thunderbird on Windows)
	xenial	Ignored (end of standard support)

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

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