CVE-2014-7860 in DNS-320L
Summary
by MITRE
The web/web_file/fb_publish.php script in D-Link DNS-320L before 1.04b12 and DNS-327L before 1.03b04 Build0119 does not authenticate requests, which allows remote attackers to obtain arbitrary photos and publish them to an arbitrary Facebook profile via a target album_id and access_token.
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Analysis
by VulDB Data Team • 12/16/2022
The vulnerability identified as CVE-2014-7860 represents a critical authentication flaw in D-Link network video recorders models DNS-320L and DNS-327L. This weakness resides within the web_file/fb_publish.php script that handles Facebook publishing functionality, creating an avenue for unauthorized remote exploitation. The flaw stems from insufficient request validation and authentication mechanisms that should have been implemented to verify user legitimacy before processing sensitive operations. Security researchers have categorized this issue under CWE-287 which addresses improper authentication vulnerabilities, specifically targeting the absence of proper access controls in web applications. The vulnerability affects firmware versions prior to 1.04b12 for DNS-320L and 1.03b04 Build0119 for DNS-327L, indicating that manufacturers had already recognized and addressed this weakness in subsequent releases.
The technical exploitation of this vulnerability enables remote attackers to bypass authentication requirements entirely and gain unauthorized access to the device's photo storage capabilities. Attackers can leverage this flaw to retrieve arbitrary photos from the device's memory and publish them to any targeted Facebook profile by simply providing a valid album_id and access_token parameter. This represents a significant operational risk as it allows for unauthorized data exfiltration and potential social engineering attacks. The vulnerability operates at the application layer of the network stack, specifically targeting the web interface components that handle media sharing functions. The lack of proper input validation and session management creates a persistent security gap that remains exploitable until firmware updates are deployed.
From an operational standpoint, this vulnerability exposes organizations and individuals to substantial risks including unauthorized data access, privacy violations, and potential reputation damage. The ability to publish arbitrary content to Facebook profiles creates opportunities for malicious actors to spread misinformation or conduct social engineering campaigns. The attack vector requires no local access or physical presence, making it particularly dangerous as it can be exploited from anywhere on the internet. Security frameworks such as MITRE ATT&CK categorize this type of vulnerability under T1190 - Exploit Public-Facing Application, where attackers leverage insecure web interfaces to gain unauthorized access to systems. Organizations utilizing these devices face potential compliance violations under data protection regulations, as the vulnerability enables unauthorized access to personal media content stored on networked devices.
Mitigation strategies for CVE-2014-7860 primarily involve immediate firmware updates from D-Link to address the authentication bypass vulnerability. Network administrators should also implement additional security controls including network segmentation to isolate these devices from critical infrastructure, firewall rules to restrict access to the device's web interface, and regular security audits to identify similar vulnerabilities. The implementation of multi-factor authentication for administrative access, though not directly addressing this specific vulnerability, would provide additional defense in depth. Organizations should also consider disabling Facebook publishing functionality if not required, and conduct regular vulnerability assessments to ensure all connected devices maintain current security patches. The vulnerability serves as a reminder of the importance of proper authentication mechanisms and input validation in web applications, aligning with industry best practices outlined in NIST SP 800-53 and ISO 27001 security standards.