CVE-2024-11694: firefox XSS — Fix

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.

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CVSS v3.1 Score

6.1

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 115.8.0
mozilla	firefox	< 133.0
mozilla	firefox	116.0 — 128.5.0
mozilla	thunderbird	< 115.18.0
mozilla	thunderbird	116.0 — 128.5.0
mozilla	thunderbird	129.0 — 133.0

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2024-63/ https://www.mozilla.org/security/advisories/mfsa2024-64/ https://www.mozilla.org/security/advisories/mfsa2024-65/ https://www.mozilla.org/security/advisories/mfsa2024-67/ https://www.mozilla.org/security/advisories/mfsa2024-68/ https://www.mozilla.org/security/advisories/mfsa2024-70/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=1924167 https://lists.debian.org/debian-lts-announce/2024/11/msg00029.html

Frequently Asked Questions

What is CVE-2024-11694? +

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. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-11694? +

CVE-2024-11694 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-11694? +

CVE-2024-11694 affects products from mozilla, specifically: firefox, thunderbird. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-11694? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-11694