Vulnerability-Lookup

BDU:2022-02447 (CVE-2021-31888)

Vulnerability from fstec – Published: 2022-04-20 – Updated: 2022-04-20 – View on bdu.fstec.ru Fixed

Title

Уязвимость FTP-сервера микропрограммного обеспечения контроллеров CAPITAL VSTAR, APOGEE MBC, APOGEE MEC, APOGEE PXC, TALON TC и операционной системы Nucleus, позволяющая нарушителю вызвать отказ в обслуживании или выполнить произвольный код

Summary

Уязвимость FTP-сервера микропрограммного обеспечения контроллеров CAPITAL VSTAR, APOGEE MBC, APOGEE MEC, APOGEE PXC, TALON TC и операционной системы Nucleus связана с ошибками при проверке длины команды MKD/XMKD. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, вызвать отказ в обслуживании или выполнить произвольный код

Severity

10.0 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:N/C:C/I:C/A:C

8.8 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Data structure manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-170 - Неправильное null-прекращение
CWE-787 - Запись за границами буфера

Aliases

CVE-2021-31888

References

3 references

URL
https://nvd.nist.gov/vuln/detail/CVE-2021-31888
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf

Impacted products

14 products from 1 vendor

Vendors

Siemens AG

Products

Nucleus NET, Nucleus Source Code, VSTAR, APOGEE MBC (PPC) (BACnet), TALON TC Compact (BACnet), TALON TC Modular (BACnet), APOGEE MBC (PPC) (P2 Ethernet):, APOGEE MEC (PPC) (BACnet), APOGEE MEC (PPC) (P2 Ethernet), APOGEE PXC Compact (BACnet), APOGEE PXC Compact (P2 Ethernet), APOGEE PXC Modular (BACnet), APOGEE PXC Modular (P2 Ethernet), NUCLEUS READYSTART v3

Versions

- (Nucleus NET), - (Nucleus Source Code), - (VSTAR), - (APOGEE MBC (PPC) (BACnet)), - (TALON TC Compact (BACnet)), - (TALON TC Modular (BACnet)), - (APOGEE MBC (PPC) (P2 Ethernet):), - (APOGEE MEC (PPC) (BACnet)), - (APOGEE MEC (PPC) (P2 Ethernet)), - (APOGEE PXC Compact (BACnet)), - (APOGEE PXC Compact (P2 Ethernet)), - (APOGEE PXC Modular (BACnet)), - (APOGEE PXC Modular (P2 Ethernet)), до 2017.02.1 (NUCLEUS READYSTART v3)

Product types

ПО программно-аппаратного средства АСУ ТП, Микропрограммный код аппаратных компонентов компьютера, Средство АСУ ТП, Network appliance software, Firmware

Mitigations

Использование рекомендаций: https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Siemens AG",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "- (Nucleus NET), - (Nucleus Source Code), - (VSTAR), - (APOGEE MBC (PPC) (BACnet)), - (TALON TC Compact (BACnet)), - (TALON TC Modular (BACnet)), - (APOGEE MBC (PPC) (P2 Ethernet):), - (APOGEE MEC (PPC) (BACnet)), - (APOGEE MEC (PPC) (P2 Ethernet)), - (APOGEE PXC Compact (BACnet)), - (APOGEE PXC Compact (P2 Ethernet)), - (APOGEE PXC Modular (BACnet)), - (APOGEE PXC Modular (P2 Ethernet)), \u0434\u043e 2017.02.1 (NUCLEUS READYSTART v3)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\nhttps://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf \nhttps://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "09.11.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "20.04.2022",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "20.04.2022",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2022-02447",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-31888",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "Nucleus NET, Nucleus Source Code, VSTAR, APOGEE MBC (PPC) (BACnet), TALON TC Compact (BACnet), TALON TC Modular (BACnet), APOGEE MBC (PPC) (P2 Ethernet):, APOGEE MEC (PPC) (BACnet), APOGEE MEC (PPC) (P2 Ethernet), APOGEE PXC Compact (BACnet), APOGEE PXC Compact (P2 Ethernet), APOGEE PXC Modular (BACnet), APOGEE PXC Modular (P2 Ethernet), NUCLEUS READYSTART v3",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": null,
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c FTP-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 CAPITAL VSTAR, APOGEE MBC, APOGEE MEC, APOGEE PXC, TALON TC \u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Nucleus, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0438\u043b\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u041d\u0435\u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0435 null-\u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 (CWE-170), \u0417\u0430\u043f\u0438\u0441\u044c \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0430\u043c\u0438 \u0431\u0443\u0444\u0435\u0440\u0430 (CWE-787)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c FTP-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u043c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u043e\u0432 CAPITAL VSTAR, APOGEE MBC, APOGEE MEC, APOGEE PXC, TALON TC \u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b Nucleus \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043e\u0448\u0438\u0431\u043a\u0430\u043c\u0438 \u043f\u0440\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0435 \u0434\u043b\u0438\u043d\u044b \u043a\u043e\u043c\u0430\u043d\u0434\u044b MKD/XMKD. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e,  \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438 \u0438\u043b\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://nvd.nist.gov/vuln/detail/CVE-2021-31888\nhttps://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf \nhttps://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u041e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0410\u0421\u0423 \u0422\u041f, \u041c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0439 \u043a\u043e\u0434 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u044b\u0445 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u043e\u0432 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u0430, \u0421\u0440\u0435\u0434\u0441\u0442\u0432\u043e \u0410\u0421\u0423 \u0422\u041f, \u041f\u041e \u0441\u0435\u0442\u0435\u0432\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e-\u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430, \u041c\u0438\u043a\u0440\u043e\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0439 \u043a\u043e\u0434",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-170, CWE-787",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 10)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 8,8)"
}

CVE-2021-31888 (GCVE-0-2021-31888)

Vulnerability from cvelistv5 – Published: 2021-11-09 11:32 – Updated: 2024-08-03 23:10

Summary

A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.19), APOGEE PXC Modular (BACnet) (All versions < V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.19), Desigo PXC00-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC00-U (All versions >= V2.3 and < V6.30.016), Desigo PXC001-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC100-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC12-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC128-U (All versions >= V2.3 and < V6.30.016), Desigo PXC200-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC36.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC50-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC64-U (All versions >= V2.3 and < V6.30.016), Desigo PXM20-E (All versions >= V2.3 and < V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus Source Code (All versions), TALON TC Compact (BACnet) (All versions < V3.5.4), TALON TC Modular (BACnet) (All versions < V3.5.4). FTP server does not properly validate the length of the “MKD/XMKD” command, leading to stack-based buffer overflows. This may result in Denial-of-Service conditions and Remote Code Execution. (FSMD-2021-0018)

Severity

No CVSS data available.

CWE

CWE-170 - Improper Null Termination

Assigner

siemens icscert root

References

2 references

URL	Tags
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_MISC

Impacted products

26 products

Vendor	Product	Version
Siemens	APOGEE MBC (PPC) (BACnet)	Affected: All versions
Siemens	APOGEE MBC (PPC) (P2 Ethernet)	Affected: All versions
Siemens	APOGEE MEC (PPC) (BACnet)	Affected: All versions
Siemens	APOGEE MEC (PPC) (P2 Ethernet)	Affected: All versions
Siemens	APOGEE PXC Compact (BACnet)	Affected: All versions < V3.5.4
Siemens	APOGEE PXC Compact (P2 Ethernet)	Affected: All versions < V2.8.19
Siemens	APOGEE PXC Modular (BACnet)	Affected: All versions < V3.5.4
Siemens	APOGEE PXC Modular (P2 Ethernet)	Affected: All versions < V2.8.19
Siemens	Desigo PXC00-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC00-U	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC001-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC100-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC12-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC128-U	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC200-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC22-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC22.1-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC36.1-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC50-E.D	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXC64-U	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Desigo PXM20-E	Affected: All versions >= V2.3 and < V6.30.016
Siemens	Nucleus NET	Affected: All versions
Siemens	Nucleus ReadyStart V3	Affected: All versions < V2017.02.4
Siemens	Nucleus Source Code	Affected: All versions
Siemens	TALON TC Compact (BACnet)	Affected: All versions < V3.5.4
Siemens	TALON TC Modular (BACnet)	Affected: All versions < V3.5.4

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        "providerMetadata": {
          "dateUpdated": "2024-08-03T23:10:30.804Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf"
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            "tags": [
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            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "product": "APOGEE MBC (PPC) (BACnet)",
          "vendor": "Siemens",
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            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
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          "product": "APOGEE MBC (PPC) (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
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          "product": "APOGEE MEC (PPC) (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "APOGEE MEC (PPC) (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
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              "version": "All versions"
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          "product": "APOGEE PXC Compact (BACnet)",
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          "product": "APOGEE PXC Compact (P2 Ethernet)",
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          "product": "APOGEE PXC Modular (BACnet)",
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              "version": "All versions \u003c V3.5.4"
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          "product": "APOGEE PXC Modular (P2 Ethernet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2.8.19"
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        },
        {
          "product": "Desigo PXC00-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
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        },
        {
          "product": "Desigo PXC00-U",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
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        },
        {
          "product": "Desigo PXC001-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
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        {
          "product": "Desigo PXC100-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
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        },
        {
          "product": "Desigo PXC12-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
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          ]
        },
        {
          "product": "Desigo PXC128-U",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXC200-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXC22-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXC22.1-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXC36.1-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXC50-E.D",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXC64-U",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Desigo PXM20-E",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
            }
          ]
        },
        {
          "product": "Nucleus NET",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "Nucleus ReadyStart V3",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V2017.02.4"
            }
          ]
        },
        {
          "product": "Nucleus Source Code",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        },
        {
          "product": "TALON TC Compact (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.4"
            }
          ]
        },
        {
          "product": "TALON TC Modular (BACnet)",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V3.5.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.19), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.19), Desigo PXC00-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC00-U (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC001-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC100-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC12-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC128-U (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC200-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC22-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC22.1-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC36.1-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC50-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC64-U (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXM20-E (All versions \u003e= V2.3 and \u003c V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2017.02.4), Nucleus Source Code (All versions), TALON TC Compact (BACnet) (All versions \u003c V3.5.4), TALON TC Modular (BACnet) (All versions \u003c V3.5.4). FTP server does not properly validate the length of the \u201cMKD/XMKD\u201d command, leading to stack-based buffer overflows. This may result in Denial-of-Service conditions and Remote Code Execution. (FSMD-2021-0018)"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-170",
              "description": "CWE-170: Improper Null Termination",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-05-10T09:46:37.000Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "productcert@siemens.com",
          "ID": "CVE-2021-31888",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "APOGEE MBC (PPC) (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE MBC (PPC) (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE MEC (PPC) (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE MEC (PPC) (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Compact (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Compact (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V2.8.19"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Modular (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "APOGEE PXC Modular (P2 Ethernet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V2.8.19"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC00-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC00-U",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC001-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC100-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC12-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC128-U",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC200-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC22-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC22.1-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC36.1-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC50-E.D",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC64-U",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXM20-E",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Nucleus NET",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Nucleus ReadyStart V3",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V2017.02.4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Nucleus Source Code",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "TALON TC Compact (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.4"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "TALON TC Modular (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.4"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Siemens"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions \u003c V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions \u003c V2.8.19), APOGEE PXC Modular (BACnet) (All versions \u003c V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions \u003c V2.8.19), Desigo PXC00-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC00-U (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC001-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC100-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC12-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC128-U (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC200-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC22-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC22.1-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC36.1-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC50-E.D (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXC64-U (All versions \u003e= V2.3 and \u003c V6.30.016), Desigo PXM20-E (All versions \u003e= V2.3 and \u003c V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions \u003c V2017.02.4), Nucleus Source Code (All versions), TALON TC Compact (BACnet) (All versions \u003c V3.5.4), TALON TC Modular (BACnet) (All versions \u003c V3.5.4). FTP server does not properly validate the length of the \u201cMKD/XMKD\u201d command, leading to stack-based buffer overflows. This may result in Denial-of-Service conditions and Remote Code Execution. (FSMD-2021-0018)"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-170: Improper Null Termination"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2021-31888",
    "datePublished": "2021-11-09T11:32:00.000Z",
    "dateReserved": "2021-04-29T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:10:30.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.