CVE-2022-31739

Published: 22 December 2022

When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%.<br>*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

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

Priority

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	bionic	Not vulnerable (Windows only)
	focal	Not vulnerable (Windows only)
	impish	Not vulnerable (Windows only)
	jammy	Not vulnerable (code not present)
	kinetic	Not vulnerable (code not present)
	lunar	Not vulnerable (code not present)
	mantic	Not vulnerable (code not present)
	trusty	Does not exist
	upstream	Released (101)
	xenial	Ignored (end of standard support)
firefox-esr Launchpad, Ubuntu, Debian	upstream	Not vulnerable (debian: Only affects Windows)
mozjs38 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs52 Launchpad, Ubuntu, Debian	bionic	Needs triage
	focal	Needs triage
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	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
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	mantic	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
	impish	Ignored (end of life)
	jammy	Needs triage
	kinetic	Ignored (end of life, was needs-triage)
	lunar	Ignored (end of life, was needs-triage)
	mantic	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
	impish	Does not exist
	jammy	Needs triage
	kinetic	Does not exist
	lunar	Does not exist
	mantic	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
thunderbird Launchpad, Ubuntu, Debian	bionic	Not vulnerable (Windows only)
	focal	Not vulnerable (Windows only)
	impish	Not vulnerable (Windows only)
	jammy	Not vulnerable (Windows only)
	kinetic	Not vulnerable (Windows only)
	lunar	Not vulnerable (Windows only)
	mantic	Not vulnerable (Windows only)
	trusty	Does not exist
	upstream	Released (91.10)
	xenial	Ignored (end of standard support)

Severity score breakdown

Parameter	Value
Base score	8.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

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