CVE-2021-40142

In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf	Patch Third Party Advisory
https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf	Patch Vendor Advisory
https://opcfoundation.org/security-bulletins/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:opcfoundation:local_discover_server:*:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:h:siemens:simatic_process_historian_opc_ua_server:-:*:*:*:*:*:*:*

OR	cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware::::::::
	cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:2022:-::::::

Configuration 3 (hide)

OR	cpe:2.3:a:siemens:simatic_net_pc:14:-::::::
	cpe:2.3:a:siemens:simatic_net_pc:15:-::::::
	cpe:2.3:a:siemens:simatic_net_pc:16:-::::::
	cpe:2.3:a:siemens:simatic_net_pc:17:-::::::
	cpe:2.3:a:siemens:simatic_wincc:-:::::::*
	cpe:2.3:a:siemens:simatic_wincc_runtime:-::::professional:::
	cpe:2.3:a:siemens:simatic_wincc_unified_scada_runtime:-:::::::*
	cpe:2.3:a:siemens:telecontrol_server_basic:3.0:::::::*

History

No history.

Information

Published : 2021-08-27 07:15

Updated : 2022-09-03 03:54

NVD link : CVE-2021-40142

Mitre link : CVE-2021-40142

CVE.ORG link : CVE-2021-40142

JSON object : View

Products Affected

siemens

simatic_wincc_runtime
simatic_wincc
telecontrol_server_basic
simatic_net_pc
simatic_wincc_unified_scada_runtime
simatic_process_historian_opc_ua_server
simatic_process_historian_opc_ua_server_firmware

opcfoundation

local_discover_server

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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"confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-08-27T07:15:08.630", "references": [{"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-321292.pdf", "tags": ["Patch", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-40142.pdf", "tags": ["Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://opcfoundation.org/security-bulletins/", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "In OPC Foundation Local Discovery Server (LDS) before 1.04.402.463, remote attackers can cause a denial of service (DoS) by sending carefully crafted messages that lead to Access of a Memory Location After the End of a Buffer."}, {"lang": "es", "value": "En OPC Foundation Local Discovery Server (LDS) versiones anteriores a 1.04.402.463, unos atacantes remotos pueden causar una denegaci\u00f3n de servicio (DoS) mediante el env\u00edo de mensajes cuidadosamente dise\u00f1ados que conllevan a el Acceso a una Ubicaci\u00f3n de Memoria Despu\u00e9s del Final de un B\u00fafer."}], "lastModified": "2022-09-03T03:54:54.180", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:opcfoundation:local_discover_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2BD47A17-5E0C-4BCA-989C-C5CDEAC20A06", "versionEndExcluding": "1.04.402.463"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:siemens:simatic_process_historian_opc_ua_server:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "14EC9343-7778-40B0-A74D-5C156FF2A229"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A3BD1C40-AB88-4CB8-820E-C32C4AEBD455", "versionEndExcluding": "2022"}, {"criteria": "cpe:2.3:o:siemens:simatic_process_historian_opc_ua_server_firmware:2022:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D113B41E-4268-407B-A729-EBC9385D8943"}], "operator": "OR"}], "operator": "AND"}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:siemens:simatic_net_pc:14:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "298E8F34-346B-4FC5-8690-3F947F585552"}, {"criteria": "cpe:2.3:a:siemens:simatic_net_pc:15:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7DF90C44-4AC2-4B2B-8712-30CD3DE96B22"}, {"criteria": "cpe:2.3:a:siemens:simatic_net_pc:16:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "496E3C43-5DA8-4983-8AC6-0F32454E22F3"}, {"criteria": "cpe:2.3:a:siemens:simatic_net_pc:17:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AFBD6DDF-917C-44CC-A944-1945DC7AC9FB"}, {"criteria": "cpe:2.3:a:siemens:simatic_wincc:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0F7BB505-A6B6-4200-9602-E4D348E407AB"}, {"criteria": "cpe:2.3:a:siemens:simatic_wincc_runtime:-:*:*:*:professional:*:*:*", "vulnerable": true, "matchCriteriaId": "E6BFBAED-EE2B-4DE4-A76C-824DD15F4608"}, {"criteria": "cpe:2.3:a:siemens:simatic_wincc_unified_scada_runtime:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "772ECFF2-BB17-4B72-A570-18631521E147"}, {"criteria": "cpe:2.3:a:siemens:telecontrol_server_basic:3.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "975FC6E7-8FDB-4361-A691-44B26B0CBFD4"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}

7.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

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