CVE-2025-34274

Description

Nagios Log Server versions prior to 2024R2.0.3 contain an execution with unnecessary privileges vulnerability as it runs its embedded Logstash process as the root user. If an attacker is able to compromise the Logstash process - for example by exploiting an insecure plugin, pipeline configuration injection, or a vulnerability in input parsing - the attacker could execute code with root privileges, resulting in full system compromise. The Logstash service has been altered to run as the lower-privileged 'nagios' user to reduce this risk associated with a network-facing service that can accept untrusted input or load third-party components.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-250 CWE-250

Affected Products

Vendor	Product	Versions
nagios	log_server	< 2024
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All
nagios	log_server	All

References

Advisories & Patches

https://www.nagios.com/products/security/#log-server-2024R2

Other References

https://www.nagios.com/changelog/#log-server https://www.vulncheck.com/advisories/nagios-log-server-logstash-process-root-privileges

Frequently Asked Questions

What is CVE-2025-34274? +

Nagios Log Server versions prior to 2024R2.0.3 contain an execution with unnecessary privileges vulnerability as it runs its embedded Logstash process as the root user. If an attacker is able to compromise the Logstash process - for example by exploiting an insecure plugin, pipeline configuration injection, or a vulnerability in input parsing - the attacker could execute code with root privileges, resulting in full system compromise. The Logstash service has been altered to run as the lower-privileged 'nagios' user to reduce this risk associated with a network-facing service that can accept untrusted input or load third-party components. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-34274? +

CVE-2025-34274 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-34274? +

CVE-2025-34274 affects products from nagios, specifically: log_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-34274? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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