CVE-2012-0289 in Network Access Control
Summary
by MITRE
Buffer overflow in Symantec Endpoint Protection (SEP) 11.0.600x through 11.0.710x and Symantec Network Access Control (SNAC) 11.0.600x through 11.0.710x allows local users to gain privileges, and modify data or cause a denial of service, via a crafted script.
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Analysis
by VulDB Data Team • 08/03/2025
The vulnerability identified as CVE-2012-0289 represents a critical buffer overflow flaw affecting Symantec Endpoint Protection versions 11.0.600x through 11.0.710x and Symantec Network Access Control versions 11.0.600x through 11.0.710x. This security weakness resides in the handling of crafted scripts within the software's execution environment, creating a pathway for malicious actors to exploit the system. The buffer overflow vulnerability specifically manifests when the software processes improperly formatted script content, leading to memory corruption that can be leveraged for privilege escalation. The flaw operates at the intersection of software security and system integrity, where improper input validation allows attackers to manipulate memory structures beyond their intended boundaries. This type of vulnerability falls under the Common Weakness Enumeration category CWE-121, which encompasses buffer overflow conditions that occur when data is written beyond the allocated buffer space, and aligns with ATT&CK technique T1068 which describes the exploitation of local privilege escalation vulnerabilities.
The technical implementation of this vulnerability enables local attackers to execute arbitrary code with elevated privileges by crafting malicious scripts that trigger the buffer overflow condition. When the affected software processes these malicious inputs, the overflow corrupts adjacent memory locations, potentially allowing attackers to overwrite critical program variables or function pointers. The exploitation process typically involves careful construction of input data that exceeds the buffer's allocated size, causing the program to write beyond its intended memory boundaries and potentially redirect execution flow. This mechanism can be exploited to execute shellcode or manipulate program execution to achieve privilege escalation from standard user level to administrator or system level access. The vulnerability's impact extends beyond simple privilege escalation as it also provides attackers with the capability to modify system data or cause denial of service conditions, making it particularly dangerous in enterprise environments where these security products are deployed.
The operational impact of CVE-2012-0289 in enterprise security environments is substantial, as it directly undermines the integrity and trustworthiness of security solutions that organizations rely upon for protection. When successfully exploited, this vulnerability can provide attackers with a foothold that bypasses the very security controls designed to prevent unauthorized access to systems. The affected products are commonly deployed across enterprise networks for endpoint protection and network access control, making the potential attack surface large and impactful. Organizations may experience unauthorized access to sensitive data, system compromise, and disruption of network services when this vulnerability is exploited. The local privilege escalation aspect means that attackers who have gained initial access to a system can leverage this weakness to obtain administrative privileges, effectively removing the security boundaries that these products are supposed to maintain. This creates a scenario where attackers can modify or delete critical system files, install backdoors, or cause persistent denial of service conditions that can go undetected for extended periods.
Mitigation strategies for CVE-2012-0289 should focus on immediate patch deployment and system hardening measures to reduce the attack surface. Symantec released patches addressing this vulnerability in subsequent versions of their software, and organizations should prioritize upgrading to patched versions to eliminate the risk. System administrators should implement additional security controls including restricted script execution, input validation enforcement, and monitoring for anomalous behavior that might indicate exploitation attempts. The vulnerability's nature suggests that implementing proper bounds checking and input sanitization in the affected software components would prevent exploitation. Security teams should also consider network segmentation and privilege separation to limit the potential damage from successful exploitation. Additionally, organizations should conduct thorough vulnerability assessments to identify other potentially affected systems and implement monitoring solutions that can detect suspicious script execution patterns. The remediation process should include comprehensive testing of patches in controlled environments before widespread deployment to ensure compatibility with existing security infrastructure and prevent unintended service disruptions.