#VU63872 Information disclosure in Mozilla Firefox and Firefox ESR - CVE-2022-31736

Vulnerability identifier: #VU63872

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2022-31736

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Mozilla Firefox
Firefox ESR

Software vendor:
Mozilla

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error when processing HTTP requests. A malicious website can obtain the size of a cross-origin resource that supported Range requests.

Install updates from vendor's website.

• https://www.mozilla.org/en-US/security/advisories/mfsa2022-20/
• https://www.mozilla.org/en-US/security/advisories/mfsa2022-21/