December 10, 2019
Siemens SiNVR 3 is prone to the following security vulnerabilities: 1. Multiple information-disclosure vulnerabilities 2. Multiple authentication-bypass vulnerabilities 3. A directory-traversal vulnerability 4. A privilege-escalation vulnerability An attacker can exploit this issue to gain access to sensitive information, bypass the authentication mechanism and perform unauthorized actions or gain elevated privileges on the affected system. The following Siemens SiNVR 3 products are affected: SiNVR 3 Central Control Server (CCS) SiNVR 3 Video Server
- Siemens SiNVR 3 Central Control Server (CCS)
- Siemens SiNVR 3 Video Server
Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn't needed. 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.
Attackers may successfully exploit client flaws in the browser through a cross-site scripting vulnerability. When possible, run client software as regular user accounts with limited access to system resources. This may limit the immediate consequences of client-side vulnerabilities.
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 logs regularly.
Implement multiple redundant layers of security.
Use of multiple redundant layers of encryption may reduce exposure to this and other latent vulnerabilities.
Currently, we are not aware of any vendor-supplied patches. If you feel we are in error or are aware of more recent information, please mail us at: email@example.com.
Raphaël Rigo from Airbus Security Lab.
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