CVE-2021-34583

Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.

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 NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=	Vendor Advisory
https://www.tenable.com/security/research/tra-2021-47	Exploit Third Party Advisory
https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=	Vendor Advisory
https://www.tenable.com/security/research/tra-2021-47	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:codesys:codesys:*:*:*:*:*:*:*:*

History

21 Nov 2024, 06:10

Type	Values Removed	Values Added
References	~~() https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= - Vendor Advisory~~	() https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download= - Vendor Advisory
References	~~() https://www.tenable.com/security/research/tra-2021-47 - Exploit, Third Party Advisory~~	() https://www.tenable.com/security/research/tra-2021-47 - Exploit, Third Party Advisory

Information

Published : 2021-10-26 10:15

Updated : 2024-11-21 06:10

NVD link : CVE-2021-34583

Mitre link : CVE-2021-34583

CVE.ORG link : CVE-2021-34583

JSON object : View

Products Affected

codesys

codesys

CWE

CWE-122

Heap-based Buffer Overflow

CWE-787

Out-of-bounds Write

{"id": "CVE-2021-34583", "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:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "info@cert.vde.com", "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}, {"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:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-10-26T10:15:07.607", "references": [{"url": "https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=", "tags": ["Vendor Advisory"], "source": "info@cert.vde.com"}, {"url": "https://www.tenable.com/security/research/tra-2021-47", "tags": ["Exploit", "Third Party Advisory"], "source": "info@cert.vde.com"}, {"url": "https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16876&token=a3f1d937f95e7034879f4f2ea8e5a99b168256a7&download=", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.tenable.com/security/research/tra-2021-47", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "info@cert.vde.com", "description": [{"lang": "en", "value": "CWE-122"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "Crafted web server requests may cause a heap-based buffer overflow and could therefore trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22."}, {"lang": "es", "value": "Unas peticiones del servidor web dise\u00f1adas pueden causar un desbordamiento del b\u00fafer en la regi\u00f3n heap de la memoria y, por tanto, podr\u00edan desencadenar una situaci\u00f3n de denegaci\u00f3n de servicio debido a un bloqueo en el servidor web de CODESYS V2 versiones anteriores a 1.1.9.22"}], "lastModified": "2024-11-21T06:10:45.120", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:codesys:codesys:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "00DD970C-3E55-4EDC-A335-3C71C19B0E99", "versionEndExcluding": "1.1.9.22"}], "operator": "OR"}]}], "sourceIdentifier": "info@cert.vde.com"}