PT-2021-16737 · Siemens · Simatic Hmi Ktp Mobile Panels+3

Published 2021-05-12 · Updated 2021-12-16 · CVE-2021-25662

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions SIMATIC HMI Comfort Outdoor Panels V15 versions 7" & 15" (incl. SIPLUS variants) through V15.1 Update 5 SIMATIC HMI Comfort Outdoor Panels V16 versions 7" & 15" (incl. SIPLUS variants) through V16 Update 3 SIMATIC HMI Comfort Panels V15 versions 4" - 22" (incl. SIPLUS variants) through V15.1 Update 5 SIMATIC HMI Comfort Panels V16 versions 4" - 22" (incl. SIPLUS variants) through V16 Update 3 SIMATIC HMI KTP Mobile Panels V15 versions KTP400F, KTP700, KTP700F, KTP900, and KTP900F through V15.1 Update 5 SIMATIC HMI KTP Mobile Panels V16 versions KTP400F, KTP700, KTP700F, KTP900, and KTP900F through V16 Update 3 SIMATIC WinCC Runtime Advanced V15 through V15.1 Update 5 SIMATIC WinCC Runtime Advanced V16 through V16 Update 3

Description A Denial-of-Service condition could occur due to the SmartVNC client's failure to handle an exception properly if the program execution process is modified after sending a packet from the server.

Recommendations For SIMATIC HMI Comfort Outdoor Panels V15, update to V15.1 Update 6 or later. For SIMATIC HMI Comfort Outdoor Panels V16, update to V16 Update 4 or later. For SIMATIC HMI Comfort Panels V15, update to V15.1 Update 6 or later. For SIMATIC HMI Comfort Panels V16, update to V16 Update 4 or later. For SIMATIC HMI KTP Mobile Panels V15, update to V15.1 Update 6 or later. For SIMATIC HMI KTP Mobile Panels V16, update to V16 Update 4 or later. For SIMATIC WinCC Runtime Advanced V15, update to V15.1 Update 6 or later. For SIMATIC WinCC Runtime Advanced V16, update to V16 Update 4 or later.

Fix

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-755

Related Identifiers

CVE-2021-25662

Affected Products

Simatic Hmi Comfort Outdoor Panels

Simatic Hmi Comfort Panels

Simatic Hmi Ktp Mobile Panels

Simatic Wincc Runtime Advanced

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2021-25662 · Security Note
• https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-25662 · Vendor Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12 · Note
• https://t.me/cvenotify/14360 · Telegram Post