CVE-2021-33023 - OpenCVE

Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

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

Vendors & Products
CPE Configurations

Vendors	Products
Advantech	Webaccess

Configuration 1 [-]

cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*

References

Link	Resource
https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02	Mitigation Third Party Advisory US Government Resource

History

No history.

MITRE Information

Status: PUBLISHED

Assigner: icscert

Published: 2021-10-12T00:00:00

Updated: 2021-10-18T12:41:08

Reserved: 2021-05-13T00:00:00

Link: CVE-2021-33023

JSON object: View

NVD Information

Status : Analyzed

Published: 2021-10-18T13:15:09.437

Modified: 2021-10-20T22:16:01.683

Link: CVE-2021-33023

JSON object: View

Redhat Information

No data.

CWE

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This is the remote access code established during installation of the Advantech WebAccess SCADA software (SCADA node, project node, or OPC Service) on the OPC Server computer. The access code you enter here must match the remote access code established during installation on the OPC Server. This prevents unauthorized users from accessing the OPC Server data using the Advantech WebAccess SCADA OPC Service.\n\nIf you have forgotten the remote access code using during software installation on the OPC Server node, you have two options:\n\nRe-install the Advantech WebAccess SCADA software on the OPC Server node to change it and edit it to match in your database.\nEdit the BWSERVER.INI file on the OPC Server node and edit it to match in your database using UPDATE."}], "source": {"advisory": "ICSA-21-285-02", "discovery": "UNKNOWN"}, "title": "Advantech WebAccess", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "ics-cert@hq.dhs.gov", "DATE_PUBLIC": "2021-10-12T19:15:00.000Z", "ID": "CVE-2021-33023", "STATE": "PUBLIC", "TITLE": "Advantech WebAccess"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "WebAccess", "version": {"version_data": [{"version_affected": "<=", "version_name": "All", "version_value": "9.02"}]}}]}, "vendor_name": "Advantech"}]}}, "credit": [{"lang": "eng", "value": "Natnael Samson, @NattiSamson, working with Trend Micro\u2019s Zero Day Initiative, reported these vulnerabilities to CISA."}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Advantech WebAccess versions 9.02 and prior are vulnerable to a heap-based buffer overflow, which may allow an attacker to remotely execute code."}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "HEAP-BASED BUFFER OVERFLOW CWE-122"}]}]}, "references": {"reference_data": [{"name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02", "refsource": "MISC", "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02"}]}, "solution": [{"lang": "en", "value": "In order to address the heap-based buffer overflow vulnerability, Advantech recommends users directly add the remote access code to avoid being attacked by unknown requests. This is the remote access code established during installation of the Advantech WebAccess SCADA software (SCADA node, project node, or OPC Service) on the OPC Server computer. The access code you enter here must match the remote access code established during installation on the OPC Server. This prevents unauthorized users from accessing the OPC Server data using the Advantech WebAccess SCADA OPC Service.\n\nIf you have forgotten the remote access code using during software installation on the OPC Server node, you have two options:\n\nRe-install the Advantech WebAccess SCADA software on the OPC Server node to change it and edit it to match in your database.\nEdit the BWSERVER.INI file on the OPC Server node and edit it to match in your database using UPDATE."}], "source": {"advisory": "ICSA-21-285-02", "discovery": "UNKNOWN"}}}}, "cveMetadata": {"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "assignerShortName": "icscert", "cveId": "CVE-2021-33023", "datePublished": "2021-10-12T00:00:00", "dateReserved": "2021-05-13T00:00:00", "dateUpdated": "2021-10-18T12:41:08", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.0"}

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