Description
Enhanced Tracking Protection's Strict mode may have inadvertently allowed a CSP `frame-src` bypass and DOM-based XSS through the Google SafeFrame shim in the Web Compatibility extension. This issue could have exposed users to malicious frames masquerading as legitimate content. This vulnerability affects Firefox < 133, Firefox ESR < 128.5, Firefox ESR < 115.18, Thunderbird < 133, Thunderbird < 128.5, and Thunderbird < 115.18.
References (8)
Core 8
Core References
Issue Tracking
https://bugzilla.mozilla.org/show_bug.cgi?id=1924167
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-63/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-64/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-65/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-67/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-68/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-70/
Scores
CVSS v3
6.1
EPSS
0.0013
EPSS Percentile
31.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (3)
mozilla/firefox
< 115.8.0
mozilla/firefox
< 133.0
mozilla/thunderbird
< 115.18.0
Published
Nov 26, 2024
Tracked Since
Feb 18, 2026