CVE-2021-42096: CSRF
First published: Thu Oct 21 2021(Updated: )
GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Mailman | <2.1.35 | |
| Debian Debian Linux | =10.0 | |
| debian/mailman | 1:2.1.29-1+deb10u5 1:2.1.29-1+deb10u2 | |
| ubuntu/mailman | <1:2.1.26-1ubuntu0.4 | 1:2.1.26-1ubuntu0.4 |
| ubuntu/mailman | <1:2.1.29-1ubuntu3.1 | 1:2.1.29-1ubuntu3.1 |
| ubuntu/mailman | <2.1.35 | 2.1.35 |
| ubuntu/mailman | <1:2.1.20-1ubuntu0.6+ | 1:2.1.20-1ubuntu0.6+ |
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Reference Links
- http://www.openwall.com/lists/oss-security/2021/10/21/4
- https://bugs.launchpad.net/mailman/+bug/1947639
- https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
- https://www.debian.org/security/2021/dsa-4991
- https://launchpad.net/bugs/cve/CVE-2021-42096
- https://bazaar.launchpad.net/~mailman-coders/mailman/2.1/revision/1873
- https://www.openwall.com/lists/oss-security/2021/10/21/4
- https://security-tracker.debian.org/tracker/CVE-2021-42096
- https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
- https://ubuntu.com/security/notices/USN-5121-1
- https://ubuntu.com/security/notices/USN-5121-2
- https://www.cve.org/CVERecord?id=CVE-2021-42096
- https://nvd.nist.gov/vuln/detail/CVE-2021-42096
- https://ubuntu.com/security/CVE-2021-42096
Frequently Asked Questions
What is CVE-2021-42096?
CVE-2021-42096 is a vulnerability in GNU Mailman before version 2.1.35 that may allow remote Privilege Escalation through a brute-force attack against the admin password.
What is the severity of CVE-2021-42096?
The severity of CVE-2021-42096 is medium with a CVSS severity score of 4.3.
Which software versions are affected by CVE-2021-42096?
CVE-2021-42096 affects GNU Mailman versions before 2.1.35.
How can I fix CVE-2021-42096?
To fix CVE-2021-42096, you should update GNU Mailman to version 2.1.35 or newer.
Where can I find more information about CVE-2021-42096?
You can find more information about CVE-2021-42096 on the MITRE website (https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42096), the Python Mailman mailing list (https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/), and the OSS Security mailing list (https://www.openwall.com/lists/oss-security/2021/10/21/4).
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- version/debian debian linux/10.0
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