CSRF in GNU Mailman
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).
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (70.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- GNU Mailman
- Debian Linux — versions 10.0
Weakness classification (CWE)
References
- mail.python.org/archives/list/mailman-announce@python.org/thread/IKCO6JU755AP5G…
- bugs.launchpad.net/mailman/+bug/1947640 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/10/21/4 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.debian.org/security/2021/dsa-4991 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-42097?
- CVE-2021-42097 is a high-severity vulnerability in GNU Mailman, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.0/10. Published 2021-10-21.
- How severe is CVE-2021-42097?
- High severity. CVSS v3 base score is 8.0 out of 10.