high
7.5
CWE
770 119
Advisory Published
Updated

CVE-2021-27383: Buffer Overflow

First published: Wed May 12 2021(Updated: )

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 a heap allocation leak vulnerability in the server Tight encoder, which could result in a Denial-of-Service condition.

Credit: productcert@siemens.com

Affected SoftwareAffected VersionHow to fix
Siemens SIMATIC WinCC Runtime Advanced<16
Siemens SIMATIC WinCC Runtime Advanced=16
Siemens SIMATIC WinCC Runtime Advanced=16-update1
Siemens SIMATIC WinCC Runtime Advanced=16-update2
Siemens SIMATIC WinCC Runtime Advanced=16-update3
Siemens SINAMICS SH150 firmware
Siemens SINAMICS SH150 firmware
Siemens SINAMICS SM150i firmware
Siemens SINAMICS SM150i firmware
Siemens Sinamics GH150 Firmware
Siemens SINAMICS GH150
Siemens SINAMICS GL150 Firmware
Siemens SINAMICS GL150 Firmware
Siemens Sinamics GM150
Siemens Sinamics GM150
Siemens Sinamics SL150 Firmware
Siemens SINAMICS SL150
Siemens Sinamics S120 Firmware
Siemens SINAMICS SM120
Siemens SINAMICS SM150i firmware
Siemens SINAMICS SM150 Firmware
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware<16
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=16
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=16-update1
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=16-update2
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=16-update3
siemens SIMATIC HMI Comfort Outdoor Panels 7\"
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware<16
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=16
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=16
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=16-update1
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=16-update2
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=16-update3
siemens SIMATIC HMI Comfort Outdoor Panels 15\"
siemens SIMATIC HMI Comfort Panels 4\" firmware<16
siemens SIMATIC HMI Comfort Panels 4\" firmware=16
siemens SIMATIC HMI Comfort Panels 4\" firmware=16-update1
siemens SIMATIC HMI Comfort Panels 4\" firmware=16-update2
siemens SIMATIC HMI Comfort Panels 4\" firmware=16-update3
siemens SIMATIC HMI Comfort Panels 4\"
siemens SIMATIC HMI Comfort Panels 22\" firmware<16
siemens SIMATIC HMI Comfort Panels 22\" firmware=16
siemens SIMATIC HMI Comfort Panels 22\" firmware=16-update1
siemens SIMATIC HMI Comfort Panels 22\" firmware=16-update2
siemens SIMATIC HMI Comfort Panels 22\" firmware=16-update3
siemens SIMATIC HMI Comfort Panels 22\"
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware<16
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=16
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=16-update1
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=16-update2
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=16-update3
siemens SIMATIC HMI KTP Mobile Panels KTP400F
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware<16
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=16
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=16-update1
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=16-update2
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=16-update3
siemens SIMATIC HMI KTP Mobile Panels KTP700
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware<16
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=16
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=16-update1
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=16-update2
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=16-update3
siemens SIMATIC HMI KTP Mobile Panels KTP700F
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware<16
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=16
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=16-update1
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=16-update2
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=16-update3
siemens SIMATIC HMI KTP Mobile Panels KTP900
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware<16
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=16
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=16-update1
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=16-update2
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=16-update3
siemens SIMATIC HMI KTP Mobile Panels KTP900F
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware<15.1
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=15.1
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=15.1-update1
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=15.1-update2
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=15.1-update3
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=15.1-update4
siemens SIMATIC HMI Comfort Outdoor Panels 7\" firmware=15.1-update5
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware<15.1
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=15.1
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=15.1-update1
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=15.1-update2
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=15.1-update3
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=15.1-update4
siemens SIMATIC HMI Comfort Outdoor Panels 15\" firmware=15.1-update5
siemens SIMATIC HMI Comfort Panels 4\" firmware<15.1
siemens SIMATIC HMI Comfort Panels 4\" firmware=15.1
siemens SIMATIC HMI Comfort Panels 4\" firmware=15.1-update1
siemens SIMATIC HMI Comfort Panels 4\" firmware=15.1-update2
siemens SIMATIC HMI Comfort Panels 4\" firmware=15.1-update3
siemens SIMATIC HMI Comfort Panels 4\" firmware=15.1-update4
siemens SIMATIC HMI Comfort Panels 4\" firmware=15.1-update5
siemens SIMATIC HMI Comfort Panels 22\" firmware<15.1
siemens SIMATIC HMI Comfort Panels 22\" firmware=15.1
siemens SIMATIC HMI Comfort Panels 22\" firmware=15.1-update1
siemens SIMATIC HMI Comfort Panels 22\" firmware=15.1-update2
siemens SIMATIC HMI Comfort Panels 22\" firmware=15.1-update3
siemens SIMATIC HMI Comfort Panels 22\" firmware=15.1-update4
siemens SIMATIC HMI Comfort Panels 22\" firmware=15.1-update5
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware<15.1
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=15.1
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=15.1-update1
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=15.1-update2
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=15.1-update3
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=15.1-update4
siemens SIMATIC HMI KTP Mobile Panels KTP400F firmware=15.1-update5
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware<15.1
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=15.1
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=15.1-update1
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=15.1-update2
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=15.1-update3
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=15.1-update4
siemens SIMATIC HMI KTP Mobile Panels KTP700 firmware=15.1-update5
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware<15.1
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=15.1
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=15.1-update1
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=15.1-update2
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=15.1-update3
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=15.1-update4
siemens SIMATIC HMI KTP Mobile Panels KTP700F firmware=15.1-update5
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware<15.1
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=15.1
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=15.1-update1
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=15.1-update2
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=15.1-update3
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=15.1-update4
siemens SIMATIC HMI KTP Mobile Panels KTP900 firmware=15.1-update5
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware<15.1
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=15.1
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=15.1-update1
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=15.1-update2
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=15.1-update3
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=15.1-update4
siemens SIMATIC HMI KTP Mobile Panels KTP900F firmware=15.1-update5
Siemens SIMATIC WinCC Runtime Advanced<15.1
Siemens SIMATIC WinCC Runtime Advanced=15.1
Siemens SIMATIC WinCC Runtime Advanced=15.1-update1
Siemens SIMATIC WinCC Runtime Advanced=15.1-update2
Siemens SIMATIC WinCC Runtime Advanced=15.1-update3
Siemens SIMATIC WinCC Runtime Advanced=15.1-update4
Siemens SIMATIC WinCC Runtime Advanced=15.1-update5
Siemens SINAMICS GH150
Siemens SINAMICS GL150 Firmware
Siemens SINAMICS GM150 (with option X30)
Siemens SINAMICS SH150 firmware
Siemens SINAMICS SL150
Siemens SINAMICS SM120
Siemens SINAMICS SM150 Firmware
Siemens SINAMICS SM150i firmware
Siemens SIMATIC HMI Comfort Outdoor Panels v15 7’ and 15’ (incl. SIPLUS variants) Update 6<15.1
15.1
Siemens SIMATIC HMI Comfort Panels<15.1
15.1
Siemens SIMATIC HMI KTP Mobile Panels v15 KTP400F, KTP700, KTP700F, KTP900, KTP900F Update 6<15.1
15.1
Siemens SIMATIC WinCC Runtime Advanced<15.1
15.1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2021-27383?

    CVE-2021-27383 is rated as critical and can lead to unauthorized access to the affected systems.

  • How do I fix CVE-2021-27383?

    To fix CVE-2021-27383, update the affected software to version V15.1 Update 6 or later, or V16 Update 4 or later.

  • Which products are affected by CVE-2021-27383?

    CVE-2021-27383 affects various models including SIMATIC HMI Comfort Outdoor Panels, SIMATIC HMI Comfort Panels, and WinCC Runtime Advanced prior to specified updates.

  • What types of attacks can CVE-2021-27383 facilitate?

    CVE-2021-27383 can facilitate unauthorized remote access, potentially leading to system manipulation or breaches.

  • Is there a specific version requirement to mitigate CVE-2021-27383?

    Yes, it is necessary to update to versions V15.1 Update 6 or V16 Update 4 or later to mitigate the vulnerability.

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