Session compromise via unescaped Port Group names
Published Nov 15, 2024 · Updated Nov 15, 2024
Stored XSS in LibreNMS before 24.10.0 allows remote authenticated users to execute JavaScript when another user opens Port Settings. EditPortsController.php's formatItem method inserts a Port Group name directly into an HTML option without entity encoding. Exploitation requires permission to create a Port Group and a second user to view an affected device's Port Settings, exposing that user's session to unauthorized actions.
Summary
What happened
Stored XSS in LibreNMS before 24.10.0 allows remote authenticated users to execute JavaScript when another user opens Port Settings. EditPortsController.php's formatItem method inserts a Port Group name directly into an HTML option without entity encoding. Exploitation requires permission to create a Port Group and a second user to view an affected device's Port Settings, exposing that user's session to unauthorized actions.
The record
- CVE
- CVE-2024-50350
- Published
- Nov 15, 2024
- Updated
- Nov 15, 2024
- Vendor
- LibreNMS
- Product
- LibreNMS
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 15, 2024CVE publishedPublication date reported by the CVE source.
- Nov 15, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <24.10.0
- Affected versionversion=< 24.10.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory stored-XSS proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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