CVE-2022-31736

Mozilla: Cross-Origin resource's length leaked

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.

Un sitio web malicioso podría haber aprendido el tamaño de un recurso de origen cruzado que admitiera solicitudes de rango. Esta vulnerabilidad afecta a Thunderbird < 91.10, Firefox < 101 y Firefox ESR < 91.10.

The Mozilla Foundation Security Advisory describes this flaw as: A malicious website that could have learned the size of a cross-origin resource that supported Range requests.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.10.0 ESR. Issues addressed include a buffer overflow vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-05-26 CVE Reserved
2022-06-02 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-829: Inclusion of Functionality from Untrusted Control Sphere

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://www.mozilla.org/security/advisories/mfsa2022-20	2023-01-03
https://www.mozilla.org/security/advisories/mfsa2022-21	2023-01-03
https://www.mozilla.org/security/advisories/mfsa2022-22	2023-01-03
https://access.redhat.com/security/cve/CVE-2022-31736	2022-06-03
https://bugzilla.redhat.com/show_bug.cgi?id=2092018	2022-06-03

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 Search vendor "Mozilla" for product "Firefox"				< 101 Search vendor "Mozilla" for product "Firefox" and version " < 101"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 91.10 Search vendor "Mozilla" for product "Firefox Esr" and version " < 91.10"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 91.10 Search vendor "Mozilla" for product "Thunderbird" and version " < 91.10"		-		Affected