CVE-2021-42097 Information

Description

GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. An attacker can obtain a value within the context of an unprivileged user account and then use that value in a CSRF attack against an admin (e.g. for account takeover).

CVSS Vector

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

Reference

https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/ https://bugs.launchpad.net/mailman/+bug/1947640 http://www.openwall.com/lists/oss-security/2021/10/21/4 https://www.debian.org/security/2021/dsa-4991

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.0