CVE-2005-3886 in security agent
Summary
by MITRE
unspecified vulnerability in cisco security agent (csa) 4.5.0 and 4.5.1 agents when running on windows systems allows local users to bypass protections and gain system privileges by executing certain local software.
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Analysis
by VulDB Data Team • 06/12/2019
The vulnerability identified as CVE-2005-3886 represents a critical privilege escalation flaw within Cisco Security Agent version 4.5.0 and 4.5.1 implementations on windows operating systems. This issue affects the core security framework of cisco's security solution, creating a significant operational risk for organizations relying on these agents for endpoint protection. The vulnerability manifests when local users can manipulate specific software execution paths to circumvent the intended security controls, ultimately allowing them to elevate their privileges to system level access. This represents a fundamental breakdown in the privilege model that cisco security agent is designed to enforce, creating an attack vector that could be exploited by malicious insiders or compromised local accounts.
The technical nature of this vulnerability stems from improper access control mechanisms within the cisco security agent implementation. When the agent processes certain local software execution requests, it fails to properly validate the privilege levels of the executing processes or the user context from which they originate. This flaw operates at the operating system level where the agent's security policies should prevent unauthorized privilege escalation but instead allows malicious execution paths to bypass these controls. The vulnerability specifically impacts the agent's ability to enforce mandatory access controls, which is a core function of any security solution designed to protect system integrity. This weakness aligns with CWE-284, which describes improper access control issues, and demonstrates how a failure in privilege enforcement can create a complete bypass of security mechanisms.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally compromises the trust model that organizations place in their security infrastructure. Local users who exploit this vulnerability can gain system-level privileges without detection, potentially allowing them to modify critical system files, install malicious software, or exfiltrate sensitive data. The implications are particularly severe for enterprise environments where cisco security agent is deployed, as it could enable attackers to establish persistent backdoors or escalate their access to other network resources. This vulnerability effectively undermines the agent's role as a security boundary, potentially allowing attackers to move laterally within the network once they have gained elevated privileges. The attack surface is limited to local execution contexts but the potential for damage is significant due to the system-level access that can be obtained.
Mitigation strategies for CVE-2005-3886 should focus on immediate patch management and operational security enhancements. Organizations must upgrade to cisco security agent versions that address this privilege escalation vulnerability, as no effective workarounds exist for the underlying flaw. The recommended approach involves deploying the patched versions of cisco security agent 4.5.2 or later, which contain the necessary access control improvements to prevent unauthorized privilege escalation. Security teams should also implement additional monitoring for suspicious process execution patterns and privilege elevation events, as the vulnerability may not be immediately detectable through standard security tools. Network segmentation and least privilege principles should be reinforced to limit the potential impact of any successful exploitation, while also conducting thorough vulnerability assessments to identify other systems running vulnerable versions of the cisco security agent. The remediation process should include comprehensive testing of patched agents to ensure that security functionality remains intact while addressing the specific privilege escalation vector. This vulnerability highlights the importance of maintaining current security agent versions and demonstrates how even minor privilege control flaws can create significant security risks in enterprise environments.