CVE-2021-23972 Information

Description

One phishing tactic on the web is to provide a link with HTTP Auth. For example ‘https://www.phishingtarget.com@evil.com’. To mitigate this type of attack Firefox will display a warning dialog; however this warning dialog would not have been displayed if evil.com used a redirect that was cached by the browser. This vulnerability affects Firefox < 86.

CVSS Vector

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

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1683536 https://www.mozilla.org/security/advisories/mfsa2021-07/ https://security.gentoo.org/glsa/202104-10

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8