CVE-2021-42097
HIGHCVSS 8/10EPSS 1.29%
Last modified
CVE-2021-42097 is a high-severity vulnerability rated 8/10 on the CVSS scale. GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A csrf_token value is not specific to a single user account. EPSS estimates a 1.29% chance of exploitation in the next 30 days.
Description
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).
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Mailman | < 2.1.35 |
| Debian | Debian Linux | 10.0 |
References
- http://www.openwall.com/lists/oss-security/2021/10/21/4Mailing List, Patch, Third Party Advisory
- https://bugs.launchpad.net/mailman/+bug/1947640Patch, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4991Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/10/21/4Mailing List, Patch, Third Party Advisory
- https://bugs.launchpad.net/mailman/+bug/1947640Patch, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4991Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42097?
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).
How severe is CVE-2021-42097?
CVE-2021-42097 has a CVSS score of 8/10 (HIGH severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.
How do I fix CVE-2021-42097?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-42097?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST