PT-2021-16736 · Siemens · Simatic Hmi Ktp Mobile Panels+3

Published 2021-05-12 · Updated 2021-12-16 · CVE-2021-25661

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) prior to V15.1 Update 6 SIMATIC HMI Comfort Outdoor Panels V16 versions 7" & 15" (incl. SIPLUS variants) prior to V16 Update 4 SIMATIC HMI Comfort Panels V15 versions 4" - 22" (incl. SIPLUS variants) prior to V15.1 Update 6 SIMATIC HMI Comfort Panels V16 versions 4" - 22" (incl. SIPLUS variants) prior to V16 Update 4 SIMATIC HMI KTP Mobile Panels V15 versions KTP400F, KTP700, KTP700F, KTP900 and KTP900F prior to V15.1 Update 6 SIMATIC HMI KTP Mobile Panels V16 versions KTP400F, KTP700, KTP700F, KTP900 and KTP900F prior to V16 Update 4 SIMATIC WinCC Runtime Advanced V15 prior to V15.1 Update 6 SIMATIC WinCC Runtime Advanced V16 prior to V16 Update 4

Description A vulnerability has been identified in SmartVNC, which could result in a Denial-of-Service condition due to an out-of-bounds memory access. This issue can be triggered on the client side when sending data 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

Access of Memory Location After End of Buffer

Weakness Enumeration

CWE-788

Related Identifiers

CVE-2021-25661

Affected Products

Simatic Hmi Comfort Outdoor Panels

Simatic Hmi Comfort Panels

Simatic Hmi Ktp Mobile Panels

Simatic Wincc Runtime Advanced

References · 4

• https://cert-portal.siemens.com/productcert/pdf/ssa-538778.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-25661 · Security Note
• https://osv.dev/vulnerability/CVE-2021-25661 · Vendor Advisory
• https://us-cert.cisa.gov/ics/advisories/icsa-21-131-12 · Note