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CVE-2021-42097

Date: October 20, 2021

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).

Severity Score

Related Resources (9)

http://www.openwall.com/lists/oss-security/2021/10/21/4
https://www.debian.org/security/2021/dsa-4991
https://access.redhat.com/security/cve/CVE-2021-42097
https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
https://nvd.nist.gov/vuln/detail/CVE-2021-42097
https://bugs.launchpad.net/mailman/+bug/1947640
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-42097
https://security-tracker.debian.org/tracker/CVE-2021-42097
https://www.mend.io/vulnerability-database/CVE-2021-42097

Severity Score

Weakness Type (CWE)

Cross-Site Request Forgery (CSRF)

CWE-352

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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