CVE-2021-27391 (GCVE-0-2021-27391)

Vulnerability from cvelistv5 – Published: 2021-09-14 10:47 – Updated: 2025-04-23 19:28
VLAI?
Summary
A vulnerability has been identified in APOGEE MBC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE MEC (PPC) (P2 Ethernet) (All versions >= V2.6.3), APOGEE PXC Compact (BACnet) (All versions < V3.5.3), APOGEE PXC Compact (P2 Ethernet) (All versions >= V2.8), APOGEE PXC Modular (BACnet) (All versions < V3.5.3), APOGEE PXC Modular (P2 Ethernet) (All versions >= V2.8), TALON TC Compact (BACnet) (All versions < V3.5.3), TALON TC Modular (BACnet) (All versions < V3.5.3). The web server of affected devices lacks proper bounds checking when parsing the Host parameter in HTTP requests, which could lead to a buffer overflow. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the device with root privileges.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
Vendor Product Version
Siemens APOGEE MBC (PPC) (P2 Ethernet) Affected: All versions >= V2.6.3
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Un atacante remoto no autenticado podr\u00eda explotar esta vulnerabilidad para ejecutar c\u00f3digo arbitrario en el dispositivo con privilegios de root\"}],\"metrics\":{\"cvssMetricV31\":[{\"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:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":10.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-120\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_mbc_\\\\(ppc\\\\)_\\\\(p2_ethernet\\\\)_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.6.3\",\"matchCriteriaId\":\"31740BC7-0AA1-407C-A09A-80F5F988B622\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_mbc_\\\\(ppc\\\\)_\\\\(p2_ethernet\\\\):*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7DCA333D-E244-474C-85A1-28D58BD52B9A\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_mec_\\\\(ppc\\\\)_\\\\(p2_ethernet\\\\)_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.6.3\",\"matchCriteriaId\":\"10AE7480-2439-4C4F-A2A9-534ADB3465FC\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_mec_\\\\(ppc\\\\)_\\\\(p2_ethernet\\\\):*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4C6D6BE1-3FBA-4CFB-BCB2-69CD32C2B66C\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_pxc_bacnet_automation_controller_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.5.3\",\"matchCriteriaId\":\"6ED57DFE-CB12-4448-97C8-FA7E91F14270\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_pxc_bacnet_automation_controller:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B0CFFD37-F58F-48D3-A466-06CAAC8BD580\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_pxc_compact_\\\\(p2_ethernet\\\\)_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.8\",\"matchCriteriaId\":\"8AB7990B-3DEF-4FB9-A577-63D5BFFA6FB0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_pxc_compact_\\\\(p2_ethernet\\\\):*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"86B37170-74CC-44A2-A069-C91E1B8A3877\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_pxc_modular_\\\\(bacnet\\\\)_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"3.5.3\",\"matchCriteriaId\":\"68DB98DC-274A-403B-846A-0B3F54A1AC4A\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_pxc_modular_\\\\(bacnet\\\\):*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"63A8FFF6-EB8F-4159-B8E7-6619780EE5F0\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:apogee_pxc_modular_\\\\(p2_ethernet\\\\)_firmware:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"2.8\",\"matchCriteriaId\":\"EC73A707-FD2E-4ACA-8F53-CE82033952B7\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:apogee_pxc_modular_\\\\(p2_ethernet\\\\):*:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"78EE7A2C-2967-40E5-8485-D9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    "vulnrichment": {
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      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.