CVE-2016-9680 in Provisioning Services
Summary
by MITRE
Citrix Provisioning Services before 7.12 allows attackers to obtain sensitive information from kernel memory via unspecified vectors.
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Analysis
by VulDB Data Team • 05/14/2026
Citrix Provisioning Services version 7.12 and earlier contains a critical information disclosure vulnerability that enables remote attackers to extract sensitive data from kernel memory through unspecified attack vectors. This vulnerability represents a significant security risk as it provides unauthorized access to system-level information that could be exploited to gain deeper insights into the underlying infrastructure. The flaw exists within the kernel components of the provisioning service, making it particularly dangerous as it operates at the core level of system operations.
The technical nature of this vulnerability involves improper handling of memory access controls within the Citrix Provisioning Services kernel modules. Attackers can leverage this weakness to perform memory reads that should normally be restricted to privileged processes only. This type of information disclosure typically stems from inadequate input validation, buffer overflows, or improper access control mechanisms that fail to properly isolate kernel memory spaces from user-space applications. The unspecified vectors suggest that multiple attack pathways may exist, potentially including network-based exploitation or local privilege escalation techniques.
The operational impact of this vulnerability extends beyond simple information disclosure, as the sensitive kernel memory data could contain system configurations, credential information, cryptographic keys, or other critical system parameters. Such exposure could enable attackers to perform advanced persistent threats, conduct further exploitation attempts, or develop more sophisticated attacks against the Citrix environment. Organizations relying on Provisioning Services for their virtual desktop infrastructure face potential compromise of their entire virtualization ecosystem, as this vulnerability could serve as a stepping stone for broader system infiltration.
Security professionals should prioritize immediate remediation through the application of Citrix's official patches and updates released for version 7.12 and later. Network segmentation and monitoring of provisioning service communications can help detect potential exploitation attempts. This vulnerability aligns with CWE-200 (Information Exposure) and may map to ATT&CK techniques involving credential access and privilege escalation. Organizations should conduct thorough security assessments of their Citrix environments and implement proper access controls to limit exposure to potential attackers. Regular security updates and vulnerability management processes become critical in preventing exploitation of such kernel-level weaknesses that could compromise entire virtual infrastructure deployments.