Use of Hard-coded Cryptographic Key in Siemens and Milestone Siveillance Video Open Network Bridge



Published: 2021-04-14
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2021-27392
CWE ID CWE-321
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Siveillance Video Open Network Bridge
Other software / Other software solutions

Vendor Siemens

Security Advisory

This security advisory describes one medium risk vulnerability.

1) Use of Hard-coded Cryptographic Key

Risk: Medium

CVSSv3.1: 9.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C] [PCI]

CVE-ID: CVE-2021-27392

CWE-ID: CWE-321 - Use of Hard-coded Cryptographic Key

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the affected Open Network Bridges store user credentials for the authentication between ONVIF clients and the ONVIF server using a hard-coded key. A remote authenticated attacker can retrieve and decrypt all credentials stored on the ONVIF server.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Siveillance Video Open Network Bridge: 2018 R2, 2018 R3, 2019 R1, 2019 R2, 2019 R3, 2020 R1, 2020 R2, 2020 R3

CPE External links

https://ics-cert.us-cert.gov/advisories/icsa-21-103-15
https://cert-portal.siemens.com/productcert/pdf/ssa-853866.pdf

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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