CVE-2017-8190 in FusionSphere OpenStack
Summary
by MITRE
FusionSphere OpenStack V100R006C00SPC102(NFV)has an improper verification of cryptographic signature vulnerability. The software does not verify the cryptographic signature. An attacker with high privilege may exploit this vulnerability to inject malicious software.
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Analysis
by VulDB Data Team • 01/16/2023
The FusionSphere OpenStack V100R006C00SPC102 (NFV) vulnerability represents a critical weakness in cryptographic signature verification mechanisms that undermines the security integrity of the virtualized infrastructure platform. This vulnerability falls under the broader category of cryptographic failures as classified by CWE-310, specifically addressing the absence of proper signature validation in security-critical operations. The affected system operates within the telecommunications and network functions virtualization environment where maintaining cryptographic integrity is paramount for preventing unauthorized modifications to critical software components. The vulnerability exists in the software's implementation of digital signature verification processes, creating a pathway for malicious actors to bypass security controls that should prevent unauthorized code execution.
The technical flaw manifests when the system fails to properly validate cryptographic signatures during software installation or update processes, allowing attackers with high privileges to inject malicious code without detection. This weakness creates a dangerous scenario where the integrity checking mechanisms that should protect against tampered software are effectively neutralized. Attackers can exploit this vulnerability by crafting malicious payloads that appear to be legitimate software updates or components, leveraging the missing signature verification to execute unauthorized code within the system. The impact extends beyond simple code injection as it compromises the entire software supply chain integrity, potentially allowing attackers to escalate privileges and gain deeper access to the virtualized environment.
Operationally, this vulnerability poses significant risks to organizations relying on FusionSphere OpenStack for their NFV deployments, particularly those in telecommunications and critical infrastructure sectors. The high privilege requirement for exploitation suggests that attackers would need to already have elevated access levels within the system, but this does not diminish the severity of the vulnerability. Once exploited, the malicious software injection could lead to complete system compromise, data exfiltration, service disruption, or the establishment of persistent backdoors. The vulnerability's impact is further amplified in NFV environments where multiple network functions operate within virtualized containers, potentially allowing attackers to compromise entire virtualized service chains. According to ATT&CK framework, this vulnerability maps to T1547.001 (Registry Run Keys/Startup Folder) and T1059 (Command and Scripting Interpreter) as attackers could leverage the compromised system to establish persistence and execute malicious commands.
Organizations should implement immediate mitigations including applying vendor patches, strengthening access controls, and implementing additional verification mechanisms beyond the default signature validation. The mitigation strategy should incorporate regular security audits of the software supply chain, enhanced monitoring of system modifications, and implementation of multi-factor authentication for privileged accounts. System administrators should also consider implementing network segmentation to limit the potential impact of successful exploitation and establish robust incident response procedures. Additionally, organizations should conduct thorough vulnerability assessments to identify other potential cryptographic weaknesses in their infrastructure and ensure that all software components maintain proper signature verification mechanisms. The vulnerability serves as a reminder of the critical importance of cryptographic integrity in modern virtualized environments and the need for comprehensive security controls that address both traditional and emerging threats in cloud and NFV deployments.