CVE-2025-34323

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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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-server	Vendor Advisory
https://www.vulncheck.com/advisories/nagios-log-server-local-privilege-escalation-via-writable-scripts-and-sudo-rules	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:nagios:log_server::::::::
	cpe:2.3:a:nagios:log_server:2026:r1::::::

History

No history.

Information

Published : 2025-11-17 18:15

Updated : 2025-11-26 15:15

NVD link : CVE-2025-34323

Mitre link : CVE-2025-34323

CVE.ORG link : CVE-2025-34323

JSON object : View

Products Affected

nagios

log_server

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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