CVE-2019-8258

UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199.

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://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf	Third Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow/	Third Party Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-161-06	Third Party Advisory US Government Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf	Third Party Advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow/	Third Party Advisory
https://www.us-cert.gov/ics/advisories/icsa-20-161-06	Third Party Advisory US Government Resource

Configurations

Configuration 1 (hide)

cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p::::::::
	cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc::::::::
	cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc::::::::

History

No history.

Information

Published : 2019-03-05 15:29

Updated : 2024-11-21 04:49

NVD link : CVE-2019-8258

Mitre link : CVE-2019-8258

CVE.ORG link : CVE-2019-8258

JSON object : View

Products Affected

uvnc

ultravnc

siemens

sinumerik_pcu_base_win10_software\/ipc
sinumerik_access_mymachine\/p2p
sinumerik_pcu_base_win7_software\/ipc

CWE

CWE-122

Heap-based Buffer Overflow

CWE-787

Out-of-bounds Write

{"id": "CVE-2019-8258", "cveTags": [], "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}]}, "published": "2019-03-05T15:29:00.320", "references": [{"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf", "tags": ["Third Party Advisory"], "source": "vulnerability@kaspersky.com"}, {"url": "https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow/", "tags": ["Third Party Advisory"], "source": "vulnerability@kaspersky.com"}, {"url": "https://www.us-cert.gov/ics/advisories/icsa-20-161-06", "tags": ["Third Party Advisory", "US Government Resource"], "source": "vulnerability@kaspersky.com"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-927095.pdf", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://ics-cert.kaspersky.com/advisories/klcert-advisories/2019/03/01/klcert-19-004-ultravnc-heap-based-buffer-overflow/", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.us-cert.gov/ics/advisories/icsa-20-161-06", "tags": ["Third Party Advisory", "US Government Resource"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "vulnerability@kaspersky.com", "description": [{"lang": "en", "value": "CWE-122"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "UltraVNC revision 1198 has a heap buffer overflow vulnerability in VNC client code which results code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1199."}, {"lang": "es", "value": "UltraVNC, en su revisi\u00f3n 1198, tiene una vulnerabilidad de desbordamiento de b\u00fafer de memoria din\u00e1mica (heap) en el c\u00f3digo del cliente VNC, lo que resulta en la ejecuci\u00f3n de c\u00f3digo. Este ataque parece ser explotable mediante la conectividad de red. Esto se ha solucionado en la revisi\u00f3n 1199."}], "lastModified": "2024-11-21T04:49:35.510", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "555D034F-3D64-4ED1-9B63-F8D59199E99C", "versionEndExcluding": "1.2.2.3"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:siemens:sinumerik_access_mymachine\\/p2p:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D9345335-DF62-4472-93CD-E2C85453F91E", "versionEndExcluding": "4.8"}, {"criteria": "cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\\/ipc:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7498412D-79FD-43FE-AD9B-5820FB5CF7D8", "versionEndExcluding": "14.00"}, {"criteria": "cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\\/ipc:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1F603341-03C5-46CA-8A74-EC5A50135194", "versionEndIncluding": "12.01"}], "operator": "OR"}]}], "sourceIdentifier": "vulnerability@kaspersky.com"}