CVE-2023-28633 in GLPI
Summary
by MITRE • 04/05/2023
GLPI is a free asset and IT management software package. Starting in version 0.84 and prior to versions 9.5.13 and 10.0.7, usage of RSS feeds is subject to server-side request forgery (SSRF). In case the remote address is not a valid RSS feed, an RSS autodiscovery feature is triggered. This feature does not check safety or URLs. Versions 9.5.13 and 10.0.7 contain a patch for this issue.
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Analysis
by VulDB Data Team • 04/23/2023
The vulnerability CVE-2023-28633 affects GLPI, a widely used open-source asset and IT management software package that helps organizations track and manage their IT infrastructure. This security flaw exists in versions 0.84 through 9.5.12 and 10.0.6, creating a significant risk for organizations relying on this platform for their IT asset management operations. The vulnerability stems from improper handling of RSS feed functionality within the software's architecture, specifically in how it processes remote feed addresses and handles feed discovery mechanisms.
The technical flaw manifests through server-side request forgery (SSRF) conditions that occur when GLPI processes RSS feed URLs. When a user provides a remote address that does not point to a valid RSS feed, the system automatically triggers an RSS autodiscovery feature designed to locate available feeds. However, this autodiscovery mechanism lacks proper input validation and URL safety checks, allowing attackers to craft malicious URLs that can bypass normal network restrictions. The vulnerability is classified as CWE-918, which specifically addresses server-side request forgery attacks where applications fail to properly validate and sanitize external resource requests. This flaw enables attackers to potentially access internal network resources, bypass firewalls, or perform unauthorized operations on behalf of the GLPI server.
The operational impact of this vulnerability extends beyond simple data exposure, as it creates multiple attack vectors for threat actors targeting IT management systems. An attacker could leverage this vulnerability to access internal services, databases, or other network resources that are typically protected by firewalls or network segmentation. The SSRF attack could potentially allow for reconnaissance activities, internal port scanning, or even privilege escalation within the organization's network infrastructure. Organizations using GLPI for critical IT asset management may face significant security risks, as the vulnerability could be exploited to gain unauthorized access to sensitive information about their IT infrastructure, including server configurations, network topology, and potentially confidential data stored within managed assets. This represents a serious concern for enterprise environments where GLPI serves as a central management platform.
The vulnerability was addressed in GLPI versions 9.5.13 and 10.0.7 through patches that implement proper URL validation and sanitization for RSS feed processing. These updates ensure that the RSS autodiscovery feature performs adequate safety checks before attempting to access remote resources, preventing unauthorized network requests that could compromise system security. Organizations should immediately upgrade to these patched versions to mitigate the risk. The remediation aligns with established security practices outlined in the ATT&CK framework under the T1190 technique for exploitation of vulnerabilities, specifically targeting server-side request forgery attacks. Security teams should also implement network monitoring to detect unusual outbound requests that might indicate exploitation attempts, and consider implementing additional access controls and network segmentation to limit the potential impact of any successful attacks.