CVE-2007-0105 in Secure Access Control Server
Summary
by MITRE
Stack-based buffer overflow in the CSAdmin service in Cisco Secure Access Control Server (ACS) for Windows before 4.1 and ACS Solution Engine before 4.1 allows remote attackers to execute arbitrary code via a crafted HTTP GET request.
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Analysis
by VulDB Data Team • 11/25/2024
The vulnerability identified as CVE-2007-0105 represents a critical stack-based buffer overflow flaw within the CSAdmin service component of Cisco Secure Access Control Server products. This issue affects Windows implementations of Cisco ACS version 4.0 and earlier, as well as the ACS Solution Engine prior to version 4.1. The vulnerability stems from insufficient input validation mechanisms within the HTTP GET request processing functionality of the CSAdmin service, creating an exploitable condition that can be leveraged by remote attackers to execute arbitrary code on affected systems.
The technical implementation of this vulnerability occurs within the stack memory management of the CSAdmin service when handling HTTP GET requests. The flaw manifests as a classic buffer overflow condition where maliciously crafted input data exceeds the allocated buffer space, causing adjacent memory locations to be overwritten. This overflow corrupts the stack frame, potentially allowing an attacker to overwrite return addresses and function pointers, ultimately enabling code execution with the privileges of the affected service. The vulnerability operates at the application layer and requires no authentication for exploitation, making it particularly dangerous in networked environments.
The operational impact of this vulnerability extends beyond simple remote code execution, as it provides attackers with complete system compromise capabilities. Successful exploitation can result in full administrative control over the affected Cisco ACS server, enabling unauthorized access to network resources, credential theft, and potential lateral movement within the network infrastructure. The vulnerability affects organizations relying on Cisco ACS for network access control, authentication services, and secure remote access management, potentially compromising the integrity of their entire network security framework.
Mitigation strategies for CVE-2007-0105 primarily involve immediate patching of affected systems to Cisco ACS version 4.1 or later, which includes the necessary code fixes addressing the buffer overflow condition. Organizations should also implement network segmentation and access controls to limit exposure of the CSAdmin service to trusted networks only. Additional defensive measures include monitoring network traffic for suspicious HTTP GET requests that may indicate exploitation attempts, implementing intrusion detection systems with signature-based detection for this specific vulnerability, and conducting thorough vulnerability assessments to identify any unpatched systems within the network infrastructure. This vulnerability aligns with CWE-121 Stack-based Buffer Overflow and maps to ATT&CK technique T1059.007 for Command and Scripting Interpreter, specifically focusing on the execution of arbitrary code through buffer overflow exploitation.