Medium severity · published Oct 21, 2021
CVE-2021-42096
GNU Mailman before 2.1.35 may allow remote Privilege Escalation
4.3
CVSS
1.2%
EPSS
No
On KEV
Description
GNU Mailman before 2.1.35 may allow remote Privilege Escalation. A certain csrf_token value is derived from the admin password, and may be useful in conducting a brute-force attack against that password.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
MA
Mailman · Gnu
before 2.1.35 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-42096
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-42096
Mailing List
http://www.openwall.com/lists/oss-security/2021/10/21/4
Patch
https://bugs.launchpad.net/mailman/+bug/1947639
mail.python.org
https://mail.python.org/archives/list/mailman-announce%40python.org/thread/IKCO6JU755AP5G5TKMBJL6IEZQTTNPDQ/
Third Party Advisory
https://www.debian.org/security/2021/dsa-4991
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