CVE-2021-42097
Published: 21 October 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).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
mailman Launchpad, Ubuntu, Debian |
bionic |
Released
(1:2.1.26-1ubuntu0.4)
|
| focal |
Released
(1:2.1.29-1ubuntu3.1)
|
|
| upstream |
Released
(2.1.35)
|
|
|
Patches: upstream: https://bazaar.launchpad.net/~mailman-coders/mailman/2.1/revision/1873 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.0 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42097
- https://mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
- https://www.openwall.com/lists/oss-security/2021/10/21/4
- https://ubuntu.com/security/notices/USN-5121-1
- https://ubuntu.com/security/notices/USN-5121-2
- NVD
- Launchpad
- Debian