8.5
CWE
352
Advisory Published
Updated

CVE-2021-42097: CSRF

First published: Thu Oct 21 2021(Updated: )

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).

Credit: cve@mitre.org cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
GNU Mailman<2.1.35
Debian Debian Linux=10.0
debian/mailman
<2.1.35
=10.0

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Frequently Asked Questions

  • What is the vulnerability ID of this security issue?

    The vulnerability ID of this security issue is CVE-2021-42097.

  • What is the severity level of CVE-2021-42097?

    CVE-2021-42097 has a severity level of high.

  • What is the affected software for CVE-2021-42097?

    The affected software for CVE-2021-42097 is GNU Mailman versions before 2.1.35.

  • How can an attacker exploit CVE-2021-42097?

    An attacker can exploit CVE-2021-42097 by obtaining a csrf_token value within the context of an unprivileged user account and using it in a CSRF attack against an admin.

  • Are there any known remedies for CVE-2021-42097?

    Yes, there are known remedies for CVE-2021-42097. For Debian, it is recommended to upgrade to version 1:2.1.29-1+deb10u5 or 1:2.1.29-1+deb10u2. For Ubuntu, upgrading to version 2.1.35 or 1:2.1.29-1ubuntu3.1 is recommended.

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