CVE-2021-38497

Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

Weakness

The product does not properly verify that the source of data or communication is valid.

Affected Software

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/111.html
• https://cwe.mitre.org/data/definitions/141.html
• https://cwe.mitre.org/data/definitions/142.html
• https://cwe.mitre.org/data/definitions/160.html
• https://cwe.mitre.org/data/definitions/21.html
• https://cwe.mitre.org/data/definitions/384.html
• https://cwe.mitre.org/data/definitions/385.html
• https://cwe.mitre.org/data/definitions/386.html
• https://cwe.mitre.org/data/definitions/387.html
• https://cwe.mitre.org/data/definitions/388.html
• https://cwe.mitre.org/data/definitions/510.html
• https://cwe.mitre.org/data/definitions/59.html
• https://cwe.mitre.org/data/definitions/60.html
• https://cwe.mitre.org/data/definitions/75.html
• https://cwe.mitre.org/data/definitions/76.html
• https://cwe.mitre.org/data/definitions/89.html

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1726621
• https://www.mozilla.org/security/advisories/mfsa2021-43/
• https://www.mozilla.org/security/advisories/mfsa2021-45/
• https://www.mozilla.org/security/advisories/mfsa2021-47/