8.8
HIGH
CVE-2021-27392
Siveillance Video Open Network Bridge Hard-Coded Key Authentication Bypass
Description

A vulnerability has been identified in Siveillance Video Open Network Bridge (2020 R3), Siveillance Video Open Network Bridge (2020 R2), Siveillance Video Open Network Bridge (2020 R1), Siveillance Video Open Network Bridge (2019 R3), Siveillance Video Open Network Bridge (2019 R2), Siveillance Video Open Network Bridge (2019 R1), Siveillance Video Open Network Bridge (2018 R3), Siveillance Video Open Network Bridge (2018 R2). Affected Open Network Bridges store user credentials for the authentication between ONVIF clients and ONVIF server using a hard-coded key. The encrypted credentials can be retrieved via the MIP SDK. This could allow an authenticated remote attacker to retrieve and decrypt all credentials stored on the ONVIF server.

INFO

Published Date :

April 22, 2021, 9:15 p.m.

Last Modified :

April 25, 2022, 5:05 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-27392 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Siemens siveillance_video_open_network_bridge
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-27392.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-853866.pdf Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-27392 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-27392 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Apr. 25, 2022

    Action Type Old Value New Value
    Removed CWE NIST CWE-522
    Added CWE NIST CWE-798
  • Initial Analysis by [email protected]

    Apr. 30, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-853866.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-853866.pdf Vendor Advisory
    Added CWE NIST CWE-522
    Added CPE Configuration OR *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2018:r2:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2018:r3:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2019:r1:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2019:r2:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2019:r3:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2020:r1:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2020:r2:*:*:*:*:*:* *cpe:2.3:a:siemens:siveillance_video_open_network_bridge:2020:r3:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-27392 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-27392 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.36 }} 0.05%

score

0.68684

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability