CVE-2017-7461 in NFC-30ir IP Camera
Summary
by MITRE
Directory traversal vulnerability in the web-based management site on the Intellinet NFC-30ir IP Camera with firmware LM.1.6.16.05 allows remote attackers to read arbitrary files via a request to a vendor-supplied CGI script that is used to read HTML text file, but that does not do any URI/path sanitization.
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Analysis
by VulDB Data Team • 09/15/2024
The CVE-2017-7461 vulnerability represents a critical directory traversal flaw in the Intellinet NFC-30ir IP Camera's web management interface. This security weakness exists within the firmware version LM.1.6.16.05 and specifically targets a vendor-supplied CGI script responsible for reading HTML text files. The vulnerability stems from insufficient input validation and sanitization mechanisms that fail to properly handle user-supplied URI or path parameters. Attackers can exploit this flaw remotely to access arbitrary files on the device's file system, potentially compromising sensitive data and system integrity. The vulnerability's severity is amplified by the fact that it affects a network-connected security device that is often deployed in sensitive environments where unauthorized access could lead to significant security breaches.
The technical exploitation of this vulnerability occurs through manipulation of the CGI script's input parameters, allowing attackers to traverse directory structures and access files outside the intended web root directory. Without proper URI/path sanitization, malicious requests can include sequences such as "../" to navigate upward through the file system hierarchy. This allows unauthorized access to configuration files, authentication credentials, system logs, and potentially other sensitive data stored on the device. The vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The flaw demonstrates poor input validation practices that violate fundamental security principles for web application development and network device security.
The operational impact of CVE-2017-7461 extends beyond simple unauthorized file access, as it can enable attackers to gain deeper insights into the camera's internal configuration and potentially escalate their privileges. An attacker who successfully exploits this vulnerability can extract sensitive information that may include network configuration details, user credentials, or other system-specific data that could be leveraged for further attacks. The remote nature of this vulnerability means that attackers do not require physical access to the device, making it particularly dangerous for deployments in environments where security is paramount. This flaw can be exploited by attackers using standard web-based attack vectors, potentially allowing them to establish persistent access or use the compromised device as a foothold for attacking other systems within the network.
Mitigation strategies for this vulnerability should include immediate firmware updates from the vendor, which would address the insufficient input validation in the CGI script. Organizations should implement network segmentation to isolate IP cameras from critical systems and enforce strict access controls for management interfaces. Additionally, deploying network monitoring solutions that can detect unusual patterns in web requests to camera management interfaces can help identify potential exploitation attempts. Security measures should also include regular vulnerability assessments of networked devices and implementing web application firewalls that can detect and block directory traversal attempts. The ATT&CK framework categorizes this type of vulnerability under T1212, which describes exploitation of software vulnerabilities, specifically targeting web application security flaws. Organizations should also consider disabling unnecessary web management interfaces when not actively required for device configuration and implement strong authentication mechanisms to limit the attack surface.