CVE-2022-22547 in Simple Diagnostics Agent
Summary
by MITRE • 03/10/2022
Simple Diagnostics Agent - versions 1.0 (up to version 1.57.), allows an attacker to access information which would otherwise be restricted via a random port 9000-65535. This allows information gathering which could be used exploit future open-source security exploits.
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Analysis
by VulDB Data Team • 03/13/2022
The vulnerability identified as CVE-2022-22547 affects the Simple Diagnostics Agent software within versions 1.0 through 1.57, presenting a significant security weakness that enables unauthorized information disclosure. This flaw manifests through a specific port exposure mechanism where the application listens on random ports within the range of 9000-65535, creating an unexpected attack surface that bypasses normal access controls. The vulnerability stems from improper access control implementation within the diagnostic agent's network communication architecture, allowing attackers to potentially discover and connect to these open ports without proper authentication or authorization. This represents a classic case of insecure direct object reference vulnerability as outlined in CWE-284, where the system fails to properly enforce access restrictions on network resources.
The technical exploitation of this vulnerability occurs through network reconnaissance activities where attackers scan the target system for open ports within the specified range, identifying the diagnostic agent's listening ports. Once discovered, these ports can be accessed to retrieve sensitive information that should normally be restricted to authorized users or system processes. The diagnostic agent's design appears to lack proper input validation and access control mechanisms, allowing any network entity to connect and potentially extract diagnostic data, system configurations, or other sensitive operational information. This information gathering capability creates a substantial risk for attackers who can use the collected data to plan more sophisticated attacks against the system or other connected components.
The operational impact of this vulnerability extends beyond simple information disclosure, as the gathered intelligence can serve as a foundation for more advanced exploitation techniques. Attackers can leverage the exposed diagnostic information to understand system architecture, network topology, and operational configurations, which significantly reduces the attack surface for future exploitation attempts. This vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1592 (Gather Victim Host Information) as it enables attackers to collect system information that would normally be protected. The exposure of diagnostic data could reveal system vulnerabilities, software versions, and configuration details that attackers can use to craft targeted exploits against known weaknesses in the system components.
Organizations affected by this vulnerability should implement immediate mitigations including network segmentation to restrict access to the diagnostic agent ports, implementing proper firewall rules to block unauthorized access, and conducting thorough network scans to identify any exposed instances. The recommended approach involves configuring the diagnostic agent to only listen on specific, well-known ports with proper authentication mechanisms, or implementing a more robust access control system that validates all incoming connections. System administrators should also consider disabling the diagnostic agent functionality entirely if it is not required for operational purposes, as this eliminates the attack surface entirely. Additionally, regular security audits should be conducted to ensure that no other applications within the environment are exposing similar vulnerabilities through random port allocation mechanisms.