Vulnerability Description
Insecure permissions in fail2ban-client v0.11.2 allows attackers with limited sudo privileges to perform arbitrary operations as root. NOTE: this is disputed by multiple parties because the action for a triggered rule can legitimately be an arbitrary operation as root. Thus, the software is behaving in accordance with its intended privilege model.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://gist.github.com/R-Security/1c707a08f9c7f9a91d9d84b5010aaed2
- https://github.com/fail2ban/fail2ban/issues/4110
- https://packetstorm.news/files/id/189989
- http://www.openwall.com/lists/oss-security/2025/12/03/2
FAQ
What is CVE-2025-45311?
CVE-2025-45311 is a vulnerability with a CVSS score of 8.8 (HIGH). Insecure permissions in fail2ban-client v0.11.2 allows attackers with limited sudo privileges to perform arbitrary operations as root. NOTE: this is disputed by multiple parties because the action for...
How severe is CVE-2025-45311?
CVE-2025-45311 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-45311?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.