Vulnerability Description
An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also revealing whether that address was subscribed in the first place.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Postorius Project | Postorius | < 1.3.5 |
References
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993746Mailing ListThird Party Advisory
- https://gitlab.com/mailman/postorius/-/commit/3d880c56b58bc26b32eac0799407d74b64PatchThird Party Advisory
- https://gitlab.com/mailman/postorius/-/issues/531ExploitIssue TrackingPatch
- https://gitlab.com/mailman/postorius/-/tagsThird Party Advisory
- https://phabricator.wikimedia.org/T289798ExploitPatchThird Party Advisory
- https://www.debian.org/security/2021/dsa-4970Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993746Mailing ListThird Party Advisory
- https://gitlab.com/mailman/postorius/-/commit/3d880c56b58bc26b32eac0799407d74b64PatchThird Party Advisory
- https://gitlab.com/mailman/postorius/-/issues/531ExploitIssue TrackingPatch
- https://gitlab.com/mailman/postorius/-/tagsThird Party Advisory
- https://phabricator.wikimedia.org/T289798ExploitPatchThird Party Advisory
- https://www.debian.org/security/2021/dsa-4970Third Party Advisory
FAQ
What is CVE-2021-40347?
CVE-2021-40347 is a vulnerability with a CVSS score of 5.4 (MEDIUM). An issue was discovered in views/list.py in GNU Mailman Postorius before 1.3.5. An attacker (logged into any account) can send a crafted POST request to unsubscribe any user from a mailing list, also ...
How severe is CVE-2021-40347?
CVE-2021-40347 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-40347?
Check the references section above for vendor advisories and patch information. Affected products include: Postorius Project Postorius.