Vulnerability Description
Nagios Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the 'nagios' group, which has write access to '/usr/local/nagioslogserver/scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. This allows arbitrary commands to be executed with root privileges, providing full compromise of the underlying operating system.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nagios | Log Server | < 2026 |
Related Weaknesses (CWE)
References
- https://theyhack.me/Rooting-Nagios-Log-Server/
- https://www.nagios.com/changelog/nagios-log-server/nagios-log-server-2026r1-0-1/Release Notes
- https://www.nagios.com/products/security/#log-serverVendor Advisory
- https://www.vulncheck.com/advisories/nagios-log-server-local-privilege-escalatioThird Party Advisory
FAQ
What is CVE-2025-34323?
CVE-2025-34323 is a vulnerability with a CVSS score of 7.8 (HIGH). Nagios Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' use...
How severe is CVE-2025-34323?
CVE-2025-34323 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-34323?
Check the references section above for vendor advisories and patch information. Affected products include: Nagios Log Server.