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



Published: 2021-02-03
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15798
CWE-ID CWE-306
Exploitation vector Network
Public exploit N/A
Vulnerable software
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SINAMICS SM150i
Hardware solutions / Firmware

SINAMICS SM150
Hardware solutions / Firmware

SINAMICS SM120
Hardware solutions / Firmware

SINAMICS SL150
Hardware solutions / Firmware

SINAMICS SH150
Hardware solutions / Firmware

SINAMICS GM150
Hardware solutions / Firmware

SINAMICS GL150
Hardware solutions / Firmware

SINAMICS GH150
Hardware solutions / Firmware

SIMATIC HMI Comfort Panels
Server applications / SCADA systems

SIMATIC HMI KTP Mobile Panels
Server applications / SCADA systems

Vendor Siemens

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Missing Authentication for Critical Function

EUVDB-ID: #VU50271

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15798

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

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SINAMICS SM150i: All versions

SINAMICS SM150: All versions

SINAMICS SM120: All versions

SINAMICS SL150: All versions

SINAMICS SH150: All versions

SINAMICS GM150: All versions

SINAMICS GL150: All versions

SINAMICS GH150: All versions

SIMATIC HMI Comfort Panels: before v16 Update 3a

SIMATIC HMI KTP Mobile Panels: before v16 Update 3a

External links

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


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker 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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