CVE-2024-49754
Published: 15 November 2024
Summary
CVE-2024-49754 is a high-severity Cross-site Scripting (CWE-79) vulnerability in Librenms Librenms. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 6.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
LibreNMS is an open-source PHP/MySQL/SNMP-based network monitoring system affected by a stored cross-site scripting vulnerability (CWE-79) in its API-Access page. The flaw resides in the handling of the "token" parameter during creation of new API tokens, allowing injection of arbitrary JavaScript that persists and executes in the context of other users' sessions.
Authenticated users with the ability to create API tokens can exploit the issue by supplying malicious payloads in the token field. Successful attacks result in execution of attacker-controlled code under the privileges of victim accounts, enabling actions such as account compromise or unauthorized operations within the monitoring platform. The vulnerability carries a CVSS 3.1 score of 7.5.
The issue is addressed in LibreNMS version 24.10.0, as detailed in the project's security advisory GHSA-gfwr-xqmj-j27v and the associated commit that sanitizes token input. The EPSS score stands at 0.1198 with a recorded peak of 0.1430, indicating moderate and slightly elevated exploitation interest following disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-3253
Vulnerability details
LibreNMS is an open-source, PHP/MySQL/SNMP-based network monitoring system. A Stored Cross-Site Scripting (XSS) vulnerability in the API-Access page allows authenticated users to inject arbitrary JavaScript through the "token" parameter when creating a new API token. This vulnerability can result in…
more
the execution of malicious code in the context of other users' sessions, compromising their accounts and enabling unauthorized actions. This vulnerability is fixed in 24.10.0.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.