CVE-2021-31883 (GCVE-0-2021-31883)

Vulnerability from cvelistv5 – Published: 2021-11-09 11:31 – Updated: 2025-03-11 09:47
VLAI?
Summary
A vulnerability has been identified in Capital Embedded AR Classic 431-422 (All versions), Capital Embedded AR Classic R20-11 (All versions < V2303). When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0013)
Severity ?
7.1 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE
  • CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
Impacted products
Vendor Product Version
Siemens Capital Embedded AR Classic 431-422 Affected: 0 , < * (custom)
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D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC22.1-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC36.1-E.D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC50-E. D (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXC64-U (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30.016), Desigo PXM20-E (Todas las versiones posteriores o iguales V2.3 y anteriores a V6.30. 016), Nucleus NET (Todas las versiones), Nucleus ReadyStart V3 (Todas las versiones anteriores a V2017.02.4), Nucleus Source Code (Todas las versiones), TALON TC Compact (BACnet) (Todas las versiones anteriores a V3.5.4), TALON TC Modular (BACnet) (Todas las versiones anteriores a V3.5.4). Al procesar un mensaje DHCP ACK, la aplicaci\u00f3n cliente DHCP no valida la longitud de la(s) opci\u00f3n(es) del proveedor, lo que provoca condiciones de denegaci\u00f3n de servicio. (FSMD-2021-0013)\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H\",\"baseScore\":7.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":4.2},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:capital_vstar:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3EC45D63-0FB7-4995-AF45-B41F6EF6A9E2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7A987CFB-4A41-4F82-8C7F-31DE8F0650DE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2017.02.1\",\"matchCriteriaId\":\"769372D0-68B3-47F3-B13B-43EAAF7E822D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:siemens:nucleus_source_code:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07DAF9C3-B56A-4F40-B90B-D0DE96869A44\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_modular_building_controller_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"60FAD4D8-54FA-4721-954E-4AD77020B189\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_modular_building_controller:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B5F978E7-3DD9-4948-BFFB-E7273003477B\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_modular_equiment_controller_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"ACCB699F-4F10-47BD-8890-047380972BE1\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_modular_equiment_controller:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7945BF7D-AB3A-4285-9C58-D56149ADFC15\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_pxc_compact_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"105A6FFB-1176-4021-868D-3D6CE77113B2\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_pxc_compact:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"8E2E8B0F-EBBC-4BCC-BE2A-20DCB506DF7F\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_pxc_modular_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C6BE40AF-B7A4-498A-943E-11AA9393A3D6\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_pxc_modular:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D9485F0B-03E0-4442-B615-2DA91AE1CD00\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:talon_tc_compact_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CA14719-C655-4BED-AE8D-B9C983847AE4\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:talon_tc_compact:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"46D32EF0-8AEC-4594-8928-45F34DC60600\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:talon_tc_modular_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1F3470FD-BEBE-465F-A189-F4CEDD0F6815\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:talon_tc_modular:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"00C647D8-1725-42FA-8042-6C413EE67573\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_modular_building_controller_firmware:*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"60FAD4D8-54FA-4721-954E-4AD77020B189\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_modular_building_controller:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B5F978E7-3DD9-4948-BFFB-E7273003477B\"}]}]}],\"references\":[{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-044112.html\",\"source\":\"productcert@siemens.com\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-114589.html\",\"source\":\"productcert@siemens.com\"},{\"url\":\"https://cert-portal.siemens.com/productcert/html/ssa-620288.html\",\"source\":\"productcert@siemens.com\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf\",\"source\":\"productcert@siemens.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf\",\"source\":\"productcert@siemens.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf\",\"source\":\"productcert@siemens.com\"},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

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.