CVE-2021-27434

Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04	Third Party Advisory US Government Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04	Third Party Advisory US Government Resource

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:unified-automation:.net_based_opc_ua_client\/server_sdk:*:*:*:*:*:*:*:*

OR	cpe:2.3:a:microsoft:.net_framework:3.5:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.0:::::::*
	cpe:2.3:a:microsoft:.net_framework:4.5:::::::*

History

No history.

Information

Published : 2021-05-20 14:15

Updated : 2024-11-21 05:57

NVD link : CVE-2021-27434

Mitre link : CVE-2021-27434

CVE.ORG link : CVE-2021-27434

JSON object : View

Products Affected

microsoft

.net_framework

unified-automation

.net_based_opc_ua_client\/server_sdk

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-674

Uncontrolled Recursion

{"id": "CVE-2021-27434", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "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:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-05-20T14:15:07.767", "references": [{"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04", "tags": ["Third Party Advisory", "US Government Resource"], "source": "ics-cert@hq.dhs.gov"}, {"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04", "tags": ["Third Party Advisory", "US Government Resource"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "ics-cert@hq.dhs.gov", "description": [{"lang": "en", "value": "CWE-200"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-674"}]}], "descriptions": [{"lang": "en", "value": "Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."}, {"lang": "es", "value": "Productos con el programa Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versiones V3.0.7 y anteriores (solo versiones de .NET 4.5, 4.0 y 3.5 Framework) son vulnerables a una recursividad no controlada, que puede permitir a un atacante desencadenar un desbordamiento de pila"}], "lastModified": "2024-11-21T05:57:58.987", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:unified-automation:.net_based_opc_ua_client\\/server_sdk:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "72FFADD0-F648-492C-9A45-1456EEDAAD06", "versionEndIncluding": "3.0.7"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E039CE1F-B988-4741-AE2E-5B36E2AF9688"}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "792B417F-96A0-4E9D-9E79-5D7F982E2225"}, {"criteria": "cpe:2.3:a:microsoft:.net_framework:4.5:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "61FAD9EE-FA7F-4B39-8A9B-AFFAEC8BF214"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "ics-cert@hq.dhs.gov"}