CVE-2015-7842 in FusionServer
Summary
by MITRE
Huawei FusionServer rack servers RH2288 V3 with software before V100R003C00SPC603, RH2288H V3 with software before V100R003C00SPC503, XH628 V3 with software before V100R003C00SPC602, RH1288 V3 with software before V100R003C00SPC602, RH2288A V2 with software before V100R002C00SPC701, RH1288A V2 with software before V100R002C00SPC502, RH8100 V3 with software before V100R003C00SPC110, CH222 V3 with software before V100R001C00SPC161, CH220 V3 with software before V100R001C00SPC161, and CH121 V3 with software before V100R001C00SPC161 allow remote authenticated operators to change server information by leveraging failure to verify user permissions.
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Analysis
by VulDB Data Team • 11/23/2019
The vulnerability identified as CVE-2015-7842 affects multiple Huawei FusionServer rack servers including models RH2288 V3, RH2288H V3, XH628 V3, RH1288 V3, RH2288A V2, RH1288A V2, RH8100 V3, CH222 V3, CH220 V3, and CH121 V3. These systems operate with firmware versions prior to specific service pack releases, creating a critical security gap that allows authenticated remote attackers to manipulate server configuration data. The flaw resides in the insufficient verification of user permissions during server information modification operations, which represents a fundamental breakdown in access control mechanisms.
This vulnerability constitutes a serious authorization bypass issue that aligns with CWE-285, which addresses improper authorization in software systems. The technical flaw manifests when operators with legitimate authentication credentials can exploit the system's failure to properly validate their permissions before allowing modifications to critical server information. The absence of proper access control checks means that unauthorized privilege escalation becomes possible, enabling attackers to modify system parameters, configuration settings, or operational data that should be restricted to specific administrative roles.
The operational impact of this vulnerability extends beyond simple configuration changes, as it creates potential pathways for more severe security incidents. Attackers could manipulate server identification data, network configurations, or operational parameters that might affect system availability, performance, or security posture. This weakness particularly concerns enterprise environments where server management systems are accessed remotely, as it could enable attackers to gain deeper insights into system configurations or potentially disrupt service operations. The vulnerability affects systems that are commonly deployed in data centers and enterprise environments, making it particularly dangerous in production environments.
Organizations affected by this vulnerability should immediately implement remediation measures including updating all affected Huawei FusionServer systems to the patched firmware versions specified in the vendor advisories. The mitigation strategy should also include enhanced monitoring of administrative access logs and implementation of network segmentation to limit the attack surface. Security teams should conduct comprehensive assessments of their server infrastructure to identify all affected systems and ensure proper access controls are enforced through regular permission reviews. This vulnerability demonstrates the critical importance of proper authentication and authorization mechanisms, aligning with ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting, as unauthorized access could lead to further exploitation opportunities within the network infrastructure.