CVE-2021-33023

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

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

Configuration 1 (hide)

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

History

20 Oct 2021, 22:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 7.5 v3 : 9.8
CWE	~~CWE-122~~	CWE-787
CPE		cpe:2.3:a:advantech:webaccess::::::::
References	~~(MISC) https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02 -~~	(MISC) https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02 - Mitigation, Third Party Advisory, US Government Resource

18 Oct 2021, 13:39

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-10-18 13:15

Updated : 2023-12-10 14:09

NVD link : CVE-2021-33023

Mitre link : CVE-2021-33023

CVE.ORG link : CVE-2021-33023

JSON object : View

Products Affected

advantech

webaccess

CWE

CWE-787

Out-of-bounds Write

CWE-122

Heap-based Buffer Overflow

{"id": "CVE-2021-33023", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "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": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "ics-cert@hq.dhs.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-10-18T13:15:09.437", "references": [{"url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-285-02", "tags": ["Mitigation", "Third Party Advisory", "US Government Resource"], "source": "ics-cert@hq.dhs.gov"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}, {"type": "Secondary", "source": "ics-cert@hq.dhs.gov", "description": [{"lang": "en", "value": "CWE-122"}]}], "descriptions": [{"lang": "en", "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."}, {"lang": "es", "value": "Advantech WebAccess versiones 9.02 y anteriores, son vulnerables a un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria, que puede permitir a un atacante ejecutar c\u00f3digo de forma remota"}], "lastModified": "2021-10-20T22:16:01.683", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:advantech:webaccess:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "800E1EAB-1270-42C2-BECE-7110B4D3E9E2", "versionEndIncluding": "9.0.2"}], "operator": "OR"}]}], "sourceIdentifier": "ics-cert@hq.dhs.gov"}