SB2021020304 - Missing Authentication for Critical Function in Siemens SIMATIC HMI Comfort Panels and SIMATIC HMI KTP Mobile Panels

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Authentication for Critical Function (CVE-ID: CVE-2020-15798)

CWE-ID: CWE-306 - Missing Authentication for Critical Function

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/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 compromise the target system.

The vulnerability exists due to the affected devices with enabled Telnet service do not require authentication for this service. A remote attacker can gain full access to the device.

Remediation

Install update from vendor's website.

References

• https://ics-cert.us-cert.gov/advisories/icsa-21-033-02
• https://cert-portal.siemens.com/productcert/pdf/ssa-520004.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-752103.pdf