Multiple D-Link Products CVE-2019-16920 Remote Command Injection Vulnerability

Description

Multiple D-Link products are prone to a command-injection vulnerability. Exploiting this issue could allow an attacker to execute arbitrary commands in the context of the affected device. Failed exploit attempts will likely result in denial-of-service conditions.

Technologies Affected

• D-Link DAP-1533
• D-Link DHP-1565
• D-Link DIR-615
• D-Link DIR-652
• D-Link DIR-655
• D-Link DIR-825
• D-Link DIR-835
• D-Link DIR-855L
• D-Link DIR-862L
• D-Link DIR-866L

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn’t needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
Execute all software as a user with minimal privileges. Use additional precautions such as restrictive environments to insulate software that may potentially handle malicious content.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].