CVE-2020-6183 in Host Agent
Summary
by MITRE
SAP Host Agent, version 7.21, allows an unprivileged user to read the shared memory or write to the shared memory by sending request to the main SAPOSCOL process and receive responses that may contain data read with user root privileges e.g. size of any directory, system hardware and OS details, leading to Missing Authorization Check vulnerability.
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Analysis
by VulDB Data Team • 03/31/2024
The vulnerability identified as CVE-2020-6183 affects SAP Host Agent version 7.21 and represents a critical Missing Authorization Check flaw that enables unprivileged users to access sensitive system information through shared memory manipulation. This vulnerability exists within the main SAPOSCOL process which serves as the central communication endpoint for various system operations. The flaw allows attackers to send crafted requests to this process and receive responses containing privileged data that should normally be restricted to root-level access. The technical implementation involves improper validation of user permissions when accessing shared memory segments, creating a pathway for privilege escalation through information disclosure rather than direct execution of malicious code.
The operational impact of this vulnerability extends beyond simple information disclosure as it provides attackers with comprehensive system reconnaissance capabilities. Unprivileged users can obtain directory size information, detailed hardware specifications, operating system metadata, and other system-level details that would typically require administrative privileges. This intelligence gathering capability significantly weakens the overall security posture by enabling attackers to perform targeted attacks against specific system configurations. The vulnerability is particularly dangerous because it operates silently without requiring elevated privileges, making detection more challenging for security monitoring systems that typically focus on privilege escalation attempts rather than information disclosure through shared memory channels.
From a cybersecurity perspective, this vulnerability aligns with CWE-284 which specifically addresses improper access control mechanisms and represents a classic case of insufficient authorization checks. The ATT&CK framework categorizes this as a privilege escalation technique through information gathering, where adversaries use reconnaissance data to plan more sophisticated attacks. The shared memory access pattern suggests potential exploitation through memory dumping techniques, where attackers could extract additional sensitive information from memory segments. This vulnerability also demonstrates the importance of proper memory management and access control in enterprise systems, particularly those handling multiple user contexts and privilege levels. The SAP Host Agent's role in system monitoring and management makes this flaw particularly dangerous as it could enable attackers to map system architecture and identify potential additional attack vectors.
Mitigation strategies for CVE-2020-6183 should focus on implementing proper authorization controls within the SAPOSCOL process and restricting access to shared memory segments. Organizations should apply the latest SAP security patches and updates immediately, as SAP has released fixes for this vulnerability. Network segmentation and access controls should be implemented to limit communication with the affected process to only trusted administrative systems. Additionally, monitoring should be enhanced to detect unusual patterns of shared memory access attempts and unauthorized data retrieval requests. Security teams should conduct thorough vulnerability assessments to identify other processes that might be susceptible to similar authorization bypasses, particularly those handling shared memory or inter-process communication. Regular security audits of SAP systems should include checks for proper privilege separation and access control mechanisms to prevent similar vulnerabilities from being introduced in future deployments.