CVE-2013-2560 in Fi8919w
Summary
by MITRE
Directory traversal vulnerability in the web interface on Foscam devices with firmware before 11.37.2.49 allows remote attackers to read arbitrary files via a .. (dot dot) in the URI, as demonstrated by discovering (1) web credentials or (2) Wi-Fi credentials.
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Analysis
by VulDB Data Team • 07/31/2024
The CVE-2013-2560 vulnerability represents a critical directory traversal flaw affecting Foscam IP security cameras and video surveillance devices. This vulnerability exists within the web interface component of affected firmware versions prior to 11.37.2.49, creating a significant security risk for users who rely on these devices for network monitoring and protection. The flaw stems from inadequate input validation within the web server implementation, allowing remote attackers to manipulate URI parameters and access files outside the intended directory structure.
The technical exploitation of this vulnerability leverages the standard directory traversal attack pattern where attackers append .. (dot dot) sequences to file paths in HTTP requests. When the web interface processes these malformed URI requests without proper sanitization, the system interprets the traversal sequences and grants access to arbitrary files within the device filesystem. This weakness falls under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal vulnerabilities. The attack vector is particularly dangerous because it can be executed remotely without requiring authentication, making it accessible to any attacker who can reach the device's web interface.
The operational impact of this vulnerability extends beyond simple information disclosure, as demonstrated by the specific attack scenarios mentioned in the CVE description. Attackers can exploit this flaw to extract web credentials, which would provide them with administrative access to the device's web interface, and Wi-Fi credentials, which could enable further network infiltration and lateral movement. This represents a severe compromise of device security, as it allows attackers to gain unauthorized access to both device management functions and network authentication details that could be used to access the broader network infrastructure. The vulnerability essentially provides a backdoor into the device's configuration and network access controls.
The implications of this vulnerability align with several ATT&CK framework techniques including T1213.002 for Data from Information Repositories and T1078.004 for Valid Accounts, as attackers can leverage the stolen credentials to maintain persistent access to the device and potentially expand their access to connected systems. Organizations using Foscam devices in security-sensitive environments face significant risks, as this vulnerability could enable attackers to monitor network traffic, disable security features, or use the device as a pivot point for accessing other network resources. The vulnerability particularly affects enterprise and industrial environments where IP cameras are deployed for security monitoring, as it undermines the fundamental security assumptions of networked devices.
Mitigation strategies for CVE-2013-2560 primarily focus on firmware updates and network segmentation. Device administrators must immediately upgrade affected Foscam devices to firmware version 11.37.2.49 or later, which includes proper input validation and path traversal protection mechanisms. Network administrators should implement firewall rules to restrict access to the device's web interface from untrusted networks, and consider disabling the web interface entirely if it is not required for management purposes. Additional protective measures include implementing network monitoring to detect anomalous URI requests, enabling device logging for access monitoring, and conducting regular security assessments of networked devices. The vulnerability serves as a reminder of the critical importance of keeping networked security devices updated and properly configured to prevent exploitation of known weaknesses.