CVE-2020-6808

When a JavaScript URL (javascript:) is evaluated and the result is a string, this string is parsed to create an HTML document, which is then presented. Previously, this documents URL (as reported by the document.location property, for example) was the originating javascript: URL which could lead to spoofing attacks; it is now correctly the URL of the originating document. This vulnerability affects Firefox < 74.

Weakness

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

Affected Software

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/21.html
• https://cwe.mitre.org/data/definitions/22.html
• https://cwe.mitre.org/data/definitions/459.html
• https://cwe.mitre.org/data/definitions/461.html
• https://cwe.mitre.org/data/definitions/473.html
• https://cwe.mitre.org/data/definitions/476.html
• https://cwe.mitre.org/data/definitions/59.html
• https://cwe.mitre.org/data/definitions/60.html
• https://cwe.mitre.org/data/definitions/667.html
• https://cwe.mitre.org/data/definitions/94.html

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1247968
• https://www.mozilla.org/security/advisories/mfsa2020-08/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1247968
• https://www.mozilla.org/security/advisories/mfsa2020-08/