CVE-2008-2015 in AppScan
Summary
by MITRE
Multiple absolute path traversal vulnerabilities in certain ActiveX controls in WatchFire AppScan 7.0 allow remote attackers to create or overwrite arbitrary files via a full pathname in the argument to the (1) CompactSave and (2) SaveSession method in one control, and the (3) saveRecordedExploreToFile method in a different control. NOTE: this can be leveraged for code execution by writing to a Startup folder.
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Analysis
by VulDB Data Team • 12/11/2024
The vulnerability identified as CVE-2008-2015 represents a critical security flaw within WatchFire AppScan 7.0's ActiveX controls that enables remote attackers to perform arbitrary file operations through path traversal techniques. This issue affects multiple ActiveX controls within the application, specifically targeting three distinct methods that handle file operations. The vulnerability stems from insufficient input validation and sanitization of file path parameters within these controls, creating opportunities for attackers to manipulate the file system through crafted malicious inputs. The flaw is particularly dangerous because it allows attackers to write files to arbitrary locations on the target system, potentially including critical system directories.
The technical implementation of this vulnerability involves three specific methods that lack proper path validation mechanisms. The CompactSave and SaveSession methods in one ActiveX control, along with the saveRecordedExploreToFile method in another control, all accept user-supplied arguments containing file path information without adequate sanitization. When these methods process full pathnames provided by untrusted sources, they directly use the supplied paths to create or overwrite files, bypassing normal file system access controls. This design flaw falls under the CWE-22 category of Path Traversal vulnerabilities, specifically representing an absolute path traversal condition where attackers can specify complete file paths rather than relative paths. The vulnerability operates at the application layer and requires no special privileges to exploit, making it particularly dangerous in environments where ActiveX controls are enabled.
The operational impact of CVE-2008-2015 extends beyond simple file manipulation to potential code execution capabilities. Attackers can leverage this vulnerability to write malicious files to system startup folders, such as the Windows Startup directory, ensuring that their malicious code executes automatically when users log into the system. This creates a persistent backdoor that can be used for further compromise, data exfiltration, or lateral movement within the network. The vulnerability is particularly concerning in enterprise environments where AppScan is used for security testing, as it could be exploited by attackers to gain unauthorized access to systems that are already running vulnerable software. The attack vector requires remote exploitation through web browsers that support ActiveX controls, making it accessible to attackers who can deliver malicious web content to targeted users.
Mitigation strategies for CVE-2008-2015 should focus on both immediate remediation and long-term security improvements. Organizations should immediately disable ActiveX controls in web browsers when they are not required for legitimate business operations, as this eliminates the attack surface entirely. The most effective immediate fix involves applying the vendor-supplied patches or updates that address the path traversal vulnerabilities in the affected ActiveX controls. Additionally, implementing proper input validation and sanitization within the application code can prevent malicious path manipulation attempts. Network segmentation and the use of web application firewalls can help detect and block suspicious file operation requests. The vulnerability demonstrates the importance of following secure coding practices and adheres to ATT&CK technique T1059.007 for Windows Command Shell execution, as the ultimate exploitation often involves creating executable files in startup directories to achieve persistent access. Organizations should also consider implementing principle of least privilege access controls and regularly audit ActiveX control usage to minimize potential attack vectors.