CVE-2021-38497 Information

Description

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.

CVSS Vector

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

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5