CVE-2022-0575 in librenms
Summary
by MITRE • 02/14/2022
Cross-site Scripting (XSS) - Stored in Packagist librenms/librenms prior to 22.2.0.
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Analysis
by VulDB Data Team • 02/17/2022
The vulnerability identified as CVE-2022-0575 represents a stored cross-site scripting flaw within the Packagist package repository for the librenms/librenms software library. This issue affects versions prior to 22.2.0 and specifically impacts the software supply chain by introducing a persistent security weakness that can be exploited through malicious input injection. The vulnerability resides in the application's handling of user-supplied data that is subsequently rendered without proper sanitization or encoding mechanisms. The flaw allows attackers to inject malicious scripts that persist in the application's database and execute whenever affected users view the compromised content. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a critical security concern in web applications. The ATT&CK framework categorizes this under T1584.001 for Establishing Persistence through Supply Chain Compromise, highlighting the potential for attackers to leverage this weakness in malicious package distributions.
The technical implementation of this stored XSS vulnerability occurs when user input containing malicious script code is accepted and stored within the librenms/librenms application's database or storage mechanisms. When other users access pages or views that display this stored data, the malicious script executes within their browser context, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability typically manifests in areas where user-generated content is displayed without proper HTML escaping or context-appropriate encoding. Attackers can craft payloads that exploit the application's failure to validate and sanitize input before storage, creating a persistent threat that remains active until the malicious data is removed or the application is updated to version 22.2.0 or later.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack chains that compromise user sessions and system integrity. An attacker who successfully exploits this vulnerability can potentially access sensitive user information, manipulate application data, or use the compromised system as a pivot point for further attacks within the network. The stored nature of this XSS flaw means that the malicious payload remains active for extended periods, increasing the window of opportunity for exploitation and making detection more challenging. Organizations relying on vulnerable versions of librenms/librenms face significant risk of unauthorized access and data compromise, particularly in environments where the application handles sensitive network monitoring information. The vulnerability's presence in a widely used network monitoring tool amplifies its potential impact, as attackers can leverage it to gain insights into network infrastructure and potentially escalate privileges within monitored environments.
Mitigation strategies for CVE-2022-0575 primarily focus on updating to the patched version 22.2.0 or later, which implements proper input validation and output encoding mechanisms to prevent script injection. Organizations should conduct comprehensive inventory assessments to identify all systems utilizing vulnerable versions of the librenms/librenms library and prioritize immediate remediation. Additional protective measures include implementing content security policies to limit script execution, deploying web application firewalls to detect and block malicious payloads, and establishing robust input validation procedures for all user-supplied data. Security teams should also consider implementing automated monitoring for suspicious package uploads and maintain updated threat intelligence feeds to identify potential supply chain attacks targeting similar vulnerabilities. The remediation process must include thorough testing of the updated software to ensure that the patch does not introduce regressions or compatibility issues within existing network monitoring infrastructure.