Siemens SIMATIC HMI Comfort Outdoor Panels up to 16 Update 3 Device Layout out-of-bounds write

Summaryinfo

A vulnerability classified as critical has been found in Siemens SIMATIC HMI Comfort Outdoor Panels, SIMATIC HMI Comfort Panels, SIMATIC HMI KTP Mobile Panels and SIMATIC Wincc Runtime Advanced up to 16 Update 3. Impacted is an unknown function of the component Device Layout Handler. The manipulation leads to out-of-bounds write. This vulnerability is documented as CVE-2021-27384. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Siemens SIMATIC HMI Comfort Outdoor Panels, SIMATIC HMI Comfort Panels, SIMATIC HMI KTP Mobile Panels and SIMATIC Wincc Runtime Advanced up to 16 Update 3 (SCADA Software). This issue affects some unknown processing of the component Device Layout Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC HMI Comfort Outdoor Panels V15 7\" & 15\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Outdoor Panels V16 7\" & 15\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI Comfort Panels V15 4\" - 22\" (incl. SIPLUS variants) (All versions < V15.1 Update 6), SIMATIC HMI Comfort Panels V16 4\" - 22\" (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels V15 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Update 6), SIMATIC HMI KTP Mobile Panels V16 KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V16 Update 4), SIMATIC WinCC Runtime Advanced V15 (All versions < V15.1 Update 6), SIMATIC WinCC Runtime Advanced V16 (All versions < V16 Update 4), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). SmartVNC has an out-of-bounds memory access vulnerability in the device layout handler, represented by a binary data stream on client side, which can potentially result in code execution.

The weakness was released 05/12/2021 as ssa-286838. It is possible to read the advisory at cert-portal.siemens.com. The identification of this vulnerability is CVE-2021-27384. The technical details are unknown and an exploit is not publicly available.

Applying the patch 16 Update 4 is able to eliminate this problem.

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Productinfo

Type

• SCADA Software

Vendor

• Siemens

Name

• SIMATIC HMI Comfort Outdoor Panels
• SIMATIC HMI Comfort Panels
• SIMATIC HMI KTP Mobile Panels
• SIMATIC Wincc Runtime Advanced

Version

• 16 Update 3

License

• commercial

Website

• Vendor: https://www.siemens.com/

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