SB2021101315 - Missing Authentication for Critical Function in Siemens SIMATIC Process Historian
Published: October 13, 2021
Security Bulletin ID
SB2021101315
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing Authentication for Critical Function (CVE-ID: CVE-2021-27395)
CWE-ID: CWE-306 - Missing Authentication for Critical Function
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the software that is used for critical functionalities lacks authentication. A remote attacker can maliciously insert, modify or delete data.
Remediation
Install update from vendor's website.