Vulnerability-Lookup

BDU:2021-05545 (CVE-2021-31884)

Vulnerability from fstec – Published: 2021-11-19 – Updated: 2021-11-19 – View on bdu.fstec.ru Fixed

Title

Уязвимость в службе DHCP микропрограммного обеспечения контроллеров APOGEE MBC, APOGEE MEC, APOGEE PXC, TALON TC и операционной системы Nucleus, позволяющая нарушителю вызвать ошибки чтения, записи и отказ в обслуживании

Summary

Уязвимость в службе DHCP микропрограммного обеспечения контроллеров APOGEE MBC, APOGEE MEC, APOGEE PXC, TALON TC и операционной системы Nucleus связана с чтением за границами буфера. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, вызвать ошибки чтения, записи и отказ в обслуживании

Severity

10.0 (High) CVSS 2.0


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

9.8 (Critical) CVSS 3.0


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

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Resource manipulation

Incidents

Being clarified

Remediation

Software update

CWE

CWE-125 - Чтение за границами буфера
CWE-170 - Неправильное null-прекращение
CWE-787 - Запись за границами буфера

Aliases

CVE-2021-31884

References

3 references

URL
https://nvd.nist.gov/vuln/detail/CVE-2021-31884
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf

Impacted products

12 products from 1 vendor

Vendors

Siemens AG

Products

Nucleus NET, Nucleus Source Code, 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)

Versions

- (Nucleus NET), - (Nucleus Source Code), - (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))

Product types

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

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:N/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), - (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))",
  "\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": "19.11.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "19.11.2021",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2021-05545",
  "\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-2021-31884",
  "\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, 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)",
  "\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 \u0432 \u0441\u043b\u0443\u0436\u0431\u0435 DHCP \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 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\u0448\u0438\u0431\u043a\u0438 \u0447\u0442\u0435\u043d\u0438\u044f, \u0437\u0430\u043f\u0438\u0441\u0438 \u0438 \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\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": "\u0427\u0442\u0435\u043d\u0438\u0435 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0430\u043c\u0438 \u0431\u0443\u0444\u0435\u0440\u0430 (CWE-125), \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 \u0432 \u0441\u043b\u0443\u0436\u0431\u0435 DHCP \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 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 \u0447\u0442\u0435\u043d\u0438\u0435\u043c \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0430\u043c\u0438 \u0431\u0443\u0444\u0435\u0440\u0430. \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\u0451\u043d\u043d\u043e, \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043e\u0448\u0438\u0431\u043a\u0438 \u0447\u0442\u0435\u043d\u0438\u044f, \u0437\u0430\u043f\u0438\u0441\u0438 \u0438 \u043e\u0442\u043a\u0430\u0437 \u0432 \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u0438",
  "\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 \u0440\u0435\u0441\u0443\u0440\u0441\u0430\u043c\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://nvd.nist.gov/vuln/detail/CVE-2021-31884\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",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-125, 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\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 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9,8)"
}

CVE-2021-31884 (GCVE-0-2021-31884)

Vulnerability from cvelistv5 – Published: 2021-11-09 11:31 – 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), Capital VSTAR (All versions with enabled Ethernet options), 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). The DHCP client application assumes that the data supplied with the “Hostname” DHCP option is NULL terminated. In cases when global hostname variable is not defined, this may lead to Out-of-bound reads, writes, and Denial-of-service conditions. (FSMD-2021-0014)

Severity

No CVSS data available.

CWE

CWE-170 - Improper Null Termination

Assigner

siemens CNA under the icscert root

CNA scorecard C 65/100 over 99 records in the last 180 days details

References

3 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
https://cert-portal.siemens.com/productcert/pdf/s…	x_refsource_MISC

Impacted products

27 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	Capital VSTAR	Affected: All versions with enabled Ethernet options
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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          "product": "Desigo PXC12-E.D",
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        },
        {
          "product": "Desigo PXC128-U",
          "vendor": "Siemens",
          "versions": [
            {
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              "version": "All versions \u003e= V2.3 and \u003c V6.30.016"
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        {
          "product": "Desigo PXC200-E.D",
          "vendor": "Siemens",
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          "product": "Desigo PXC22-E.D",
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          "product": "Desigo PXC22.1-E.D",
          "vendor": "Siemens",
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          "product": "Desigo PXC36.1-E.D",
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          "product": "Desigo PXC50-E.D",
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        {
          "product": "Desigo PXC64-U",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
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          "product": "Desigo PXM20-E",
          "vendor": "Siemens",
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          "vendor": "Siemens",
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          "product": "Nucleus ReadyStart V3",
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          "product": "TALON TC Modular (BACnet)",
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                      "product_name": "APOGEE MEC (PPC) (BACnet)",
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                    {
                      "product_name": "APOGEE MEC (PPC) (P2 Ethernet)",
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                            "version_value": "All versions"
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                      "product_name": "APOGEE PXC Compact (P2 Ethernet)",
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                    {
                      "product_name": "APOGEE PXC Modular (BACnet)",
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                    {
                      "product_name": "APOGEE PXC Modular (P2 Ethernet)",
                      "version": {
                        "version_data": [
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                            "version_value": "All versions \u003c V2.8.19"
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                    {
                      "product_name": "Capital VSTAR",
                      "version": {
                        "version_data": [
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                            "version_value": "All versions with enabled Ethernet options"
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                      }
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                    },
                    {
                      "product_name": "Desigo PXC00-U",
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                      }
                    },
                    {
                      "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"
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                        ]
                      }
                    },
                    {
                      "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"
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                      }
                    },
                    {
                      "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"
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                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC36.1-E.D",
                      "version": {
                        "version_data": [
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                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
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                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC50-E.D",
                      "version": {
                        "version_data": [
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                            "version_value": "All versions \u003e= V2.3 and \u003c V6.30.016"
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                      "product_name": "Desigo PXC64-U",
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                      "product_name": "Nucleus Source Code",
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                      "product_name": "TALON TC Compact (BACnet)",
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                    {
                      "product_name": "TALON TC Modular (BACnet)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V3.5.4"
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                      }
                    }
                  ]
                },
                "vendor_name": "Siemens"
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          }
        },
        "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), Capital VSTAR (All versions with enabled Ethernet options), 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). The DHCP client application assumes that the data supplied with the \u201cHostname\u201d DHCP option is NULL terminated. In cases when global hostname variable is not defined, this may lead to Out-of-bound reads, writes, and Denial-of-service conditions. (FSMD-2021-0014)"
            }
          ]
        },
        "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"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2021-31884",
    "datePublished": "2021-11-09T11:31:57.000Z",
    "dateReserved": "2021-04-29T00:00:00.000Z",
    "dateUpdated": "2024-08-03T23:10:30.775Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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