CVE-2018-5926 in Remote Graphics Software
Summary
by MITRE
A potential vulnerability has been identified in HP Remote Graphics Software?s certificate authentication process version 7.5.0 and earlier.
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Analysis
by VulDB Data Team • 05/22/2020
The vulnerability identified in CVE-2018-5926 resides within HP Remote Graphics Software certificate authentication mechanisms, specifically affecting version 7.5.0 and earlier implementations. This flaw represents a critical security weakness in the authentication infrastructure that could potentially allow unauthorized access to remote graphics sessions. The vulnerability stems from improper certificate validation procedures that fail to adequately verify the authenticity and integrity of digital certificates used to establish secure connections between client and server components. The affected software operates within the remote desktop and graphics streaming environment, where secure authentication is paramount for protecting sensitive data and system access controls.
The technical implementation of this vulnerability manifests through insufficient certificate chain validation and trust verification processes. When the software processes certificate authentication requests, it fails to properly validate certificate signatures, expiration dates, and certificate authority trust relationships. This weakness creates an attack surface where malicious actors could potentially forge certificates or exploit trust relationships to gain unauthorized access to remote graphics sessions. The flaw operates at the cryptographic protocol level, specifically within the TLS/SSL certificate handling mechanisms that are fundamental to secure remote access implementations. According to CWE classification, this vulnerability aligns with CWE-295 which addresses improper certificate validation and certificate trust management failures.
The operational impact of this vulnerability extends beyond simple authentication bypass scenarios to encompass potential full system compromise and data exfiltration capabilities. Attackers exploiting this weakness could establish unauthorized remote graphics sessions, potentially gaining access to sensitive workstations, servers, or network infrastructure. The vulnerability particularly affects enterprise environments where HP Remote Graphics Software is deployed for remote access management, as it could enable attackers to bypass traditional network security controls and establish persistent access to critical systems. This risk is amplified in environments where remote graphics software serves as a primary access method for administrative tasks or sensitive data processing activities.
Organizations should implement immediate mitigations including mandatory software updates to versions beyond 7.5.0 where the certificate validation has been corrected. Network segmentation and monitoring should be enhanced to detect unusual authentication patterns or unauthorized access attempts. The implementation of additional authentication layers such as multi-factor authentication can provide defense-in-depth against potential exploitation attempts. According to ATT&CK framework reference T1078 which addresses valid accounts and T1566 which covers credential harvesting, this vulnerability creates opportunities for attackers to establish persistent access and potentially escalate privileges. System administrators should also conduct comprehensive vulnerability assessments to identify any other instances of the affected software within their network infrastructure and ensure proper certificate management practices are implemented across all remote access solutions.