CVE-2021-38503

 

Published at: - 08-12-2021 11:15

Last modified: - 24-09-2022 03:03

Total changes: - 12

Description

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://www.mozilla.org/security/advisories/mfsa2021-50/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1729517
• https://www.mozilla.org/security/advisories/mfsa2021-49/
• https://www.mozilla.org/security/advisories/mfsa2021-48/
• DSA-5026-Third Party Advisory
• [debian-lts-announce] 20211229 [SECURITY] [DLA 2863-1] firefox-esr security update-Mailing List, Third Party Advisory
• DSA-5034-Third Party Advisory
• [debian-lts-announce] 20220104 [SECURITY] [DLA 2874-1] thunderbird security update-Mailing List, Third Party Advisory
• GLSA-202202-03-Third Party Advisory
• GLSA-202208-14-

 

Keywords

NVD

 

CVE-2021-38503

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures