CVE-2012-2957 in Web Gateway
Summary
by MITRE
The management console in Symantec Web Gateway 5.0.x before 5.0.3.18 allows local users to gain privileges by modifying files, related to a "file inclusion" issue.
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Analysis
by VulDB Data Team • 12/23/2024
The vulnerability identified as CVE-2012-2957 affects Symantec Web Gateway 5.0.x versions prior to 5.0.3.18, specifically targeting the management console component. This issue represents a critical privilege escalation vulnerability that enables local attackers to elevate their system privileges through file modification techniques. The vulnerability stems from inadequate input validation and file handling mechanisms within the web gateway's management interface, creating an environment where malicious actors can manipulate system files to achieve unauthorized access.
The technical flaw manifests as a file inclusion vulnerability that allows local users to modify critical system files within the management console environment. This weakness operates under CWE-22 which categorizes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. Attackers can exploit this vulnerability by manipulating file paths to access or modify files outside the intended directory structure, effectively bypassing normal access controls and privilege boundaries. The vulnerability is particularly dangerous because it operates at the local user level, meaning that any user with access to the system can potentially leverage this flaw to gain elevated privileges.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise and unauthorized access to sensitive network traffic data. When local users can modify files within the management console, they may be able to inject malicious code, alter configuration settings, or manipulate authentication mechanisms. This creates a scenario where an attacker could gain administrative access to the web gateway, potentially allowing them to redirect traffic, modify security policies, or even establish persistent backdoors within the network infrastructure. The management console serves as a critical control point for network security policies, making this vulnerability particularly attractive to attackers seeking long-term access to enterprise networks.
Mitigation strategies for CVE-2012-2957 should prioritize immediate patching of affected Symantec Web Gateway installations to version 5.0.3.18 or later, which contains the necessary security fixes to address the file inclusion vulnerability. Organizations should implement comprehensive file integrity monitoring solutions to detect unauthorized modifications to critical system files, particularly within the management console directories. Access controls should be strengthened through principle of least privilege enforcement, ensuring that local user accounts have minimal necessary permissions and that file system permissions are properly configured to prevent unauthorized file modifications. Network segmentation and monitoring solutions should be deployed to detect anomalous file modification activities and unauthorized privilege escalation attempts, as outlined in the ATT&CK framework's privilege escalation tactics. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other network security appliances and management interfaces, following established security standards and best practices for secure system administration.