CVE-2021-23968 Information

Description

If Content Security Policy blocked frame navigation the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. This could be used to leak sensitive information contained in such URIs. This vulnerability affects Firefox < 86 Thunderbird < 78.8 and Firefox ESR < 78.8.

CVSS Vector

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

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1687342 https://www.mozilla.org/security/advisories/mfsa2021-08/ https://www.mozilla.org/security/advisories/mfsa2021-09/ https://www.mozilla.org/security/advisories/mfsa2021-07/ https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html https://www.debian.org/security/2021/dsa-4866 https://security.gentoo.org/glsa/202104-09 https://security.gentoo.org/glsa/202104-10

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

4.3