CVE-2021-42097

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).

Category

8.0
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.30% Top 25%
Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
https://bugs.launchpad.net/mailman/+bug/1947640 third party advisory patch
http://www.openwall.com/lists/oss-security/2021/10/21/4 patch mailing list third party advisory
https://www.debian.org/security/2021/dsa-4991 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-42097?
CVE-2021-42097 has been scored as a high severity vulnerability.
How to fix CVE-2021-42097?
To fix CVE-2021-42097, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42097 being actively exploited in the wild?
It is possible that CVE-2021-42097 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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