CVE-2022-38476

Mozilla: Data race and potential use-after-free in PK11_ChangePW

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A data race could occur in the <code>PK11_ChangePW</code> function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password. This vulnerability affects Firefox ESR < 102.2 and Thunderbird < 102.2.

Podría producirse una carrera de datos en la función <code>PK11_ChangePW</code>, lo que podría provocar una vulnerabilidad de use-after-free. En Firefox, este bloqueo protegía los datos cuando un usuario cambiaba su contraseña maestra. Esta vulnerabilidad afecta a Firefox ESR < 102.2 y Thunderbird < 102.2.

The Mozilla Foundation Security Advisory describes this flaw as: A data race could occur in the PK11_ChangePW function, potentially leading to a use-after-free vulnerability. In Firefox, this lock protected the data when a user changed their master password.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.13.0 ESR. Issues addressed include spoofing and use-after-free vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-08-19 CVE Reserved
2022-08-25 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-416: Use After Free

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.mozilla.org/security/advisories/mfsa2022-34	2023-01-03
https://www.mozilla.org/security/advisories/mfsa2022-36	2023-01-03
https://access.redhat.com/security/cve/CVE-2022-38476	2022-08-24
https://bugzilla.redhat.com/show_bug.cgi?id=2120678	2022-08-24

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 102.2 Search vendor "Mozilla" for product "Firefox Esr" and version " < 102.2"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 102.2 Search vendor "Mozilla" for product "Thunderbird" and version " < 102.2"		-		Affected