CVE-2013-4780 in Enterprise OpenScape Branch
Summary
by MITRE
core/getLog.php on the Siemens Enterprise OpenScape Branch appliance and OpenScape Session Border Controller (SBC) before 2 R0.32.0, and 7 before 7 R1.7.0, allows remote attackers to read arbitrary files via unspecified vectors.
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Analysis
by VulDB Data Team • 02/26/2018
The vulnerability identified as CVE-2013-4780 affects Siemens Enterprise OpenScape Branch appliances and OpenScape Session Border Controllers running specific firmware versions. This issue resides within the core/getLog.php component of these network security devices, representing a critical file inclusion vulnerability that enables unauthorized remote access to sensitive system files. The affected products operate in enterprise networking environments where they manage voice and data communications, making them attractive targets for attackers seeking to compromise network infrastructure. The vulnerability stems from inadequate input validation and improper access controls within the web interface component, allowing malicious actors to exploit unspecified vectors to retrieve arbitrary files from the system.
The technical flaw manifests as a lack of proper authorization checks and sanitization of user-supplied input parameters. When the getLog.php script processes requests, it fails to adequately validate or sanitize file path parameters, creating an opportunity for attackers to manipulate the system into disclosing files that should remain protected. This vulnerability maps to CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal attacks. The weakness allows attackers to navigate through the file system hierarchy and access files outside the intended directory structure, potentially exposing system logs, configuration files, credentials, or other sensitive data that could be leveraged for further compromise.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with potential access to critical system components that could facilitate more sophisticated attacks. Network administrators and security personnel face significant risk when these devices are exposed to untrusted networks, as remote attackers can exploit the vulnerability without authentication. The affected devices typically serve as gateways for voice and data traffic, making them prime targets for man-in-the-middle attacks, traffic interception, or complete network compromise. This vulnerability aligns with ATT&CK technique T1213.002, which describes data from information repositories, and could enable adversaries to gather intelligence for subsequent phases of attack including lateral movement and privilege escalation. The exposure of system logs and configuration files could reveal network topology, user credentials, or system configurations that would significantly aid attackers in planning more targeted attacks.
Mitigation strategies for CVE-2013-4780 require immediate firmware updates to patched versions that address the file access vulnerability. Organizations should implement network segmentation to limit exposure of these devices to untrusted networks and ensure that only authorized personnel can access the web interfaces. Additional protective measures include configuring firewall rules to restrict access to the affected web services, implementing network monitoring to detect suspicious file access patterns, and conducting regular vulnerability assessments of network infrastructure components. Security teams should also establish incident response procedures to quickly address potential exploitation attempts and maintain detailed logs of system access for forensic analysis. The remediation process must include comprehensive testing of updated firmware to ensure that the patch does not introduce compatibility issues with existing network services while maintaining the device's operational integrity.