CVE-2008-0396 in Update Server
Summary
by MITRE
Directory traversal vulnerability in BitDefender Update Server (http.exe), as used in BitDefender products including Security for Fileservers and Enterprise Manager (BDEM), allows remote attackers to read arbitrary files via .. (dot dot) sequences in an HTTP request.
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Analysis
by VulDB Data Team • 08/04/2019
The vulnerability identified as CVE-2008-0396 represents a critical directory traversal flaw within BitDefender Update Server component known as http.exe. This vulnerability affects multiple BitDefender products including Security for Fileservers and Enterprise Manager (BDEM) systems, creating a significant security risk for organizations relying on these protection platforms. The flaw manifests when the system processes HTTP requests containing .. (dot dot) sequences, which are commonly used in directory traversal attacks to navigate outside of intended directories and access restricted files.
The technical implementation of this vulnerability stems from inadequate input validation within the http.exe server component. When processing HTTP requests, the application fails to properly sanitize user-supplied input containing directory traversal sequences, allowing attackers to manipulate file paths and access arbitrary files on the underlying file system. This weakness directly maps to CWE-22, which categorizes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal vulnerabilities. The flaw enables attackers to bypass normal access controls and potentially read sensitive configuration files, system binaries, or other protected resources that should remain inaccessible to unauthorized users.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with the capability to escalate their privileges and potentially compromise entire network infrastructures. Remote attackers can leverage this vulnerability to access critical system files, configuration data, and potentially sensitive user information stored within the BitDefender environment. The attack vector is particularly dangerous because it requires no local access or authentication, making it a high-severity threat that can be exploited from anywhere on the network. This vulnerability aligns with ATT&CK technique T1083, which covers discovering file and directory permissions, and T1566, which addresses credential access through various attack vectors including path traversal exploits.
Organizations affected by this vulnerability should immediately implement multiple layers of defense to mitigate the risk. The primary mitigation involves applying the official security patches released by BitDefender to address the directory traversal flaw in http.exe. Additionally, network segmentation and firewall rules should be implemented to restrict access to the BitDefender Update Server component, limiting exposure to unauthorized users. Input validation controls should be strengthened at the application level to prevent the processing of malformed HTTP requests containing directory traversal sequences. Security monitoring should be enhanced to detect suspicious HTTP requests containing .. sequences, and regular vulnerability assessments should be conducted to identify similar weaknesses in other network components. System administrators should also review and restrict file permissions on the affected systems to minimize the potential impact of successful exploitation attempts. The vulnerability demonstrates the critical importance of proper input validation and access control mechanisms in enterprise security solutions, as even security products can contain exploitable flaws that compromise entire network environments.