CVE-2017-7479

OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector : AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://www.debian.org/security/2017/dsa-3900
http://www.securityfocus.com/bid/98443
http://www.securitytracker.com/id/1038473
https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openvpn:openvpn::::::::
	cpe:2.3:a:openvpn:openvpn:2.4.0:::::::*
	cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2::::::
	cpe:2.3:a:openvpn:openvpn:2.4.0:beta1::::::
	cpe:2.3:a:openvpn:openvpn:2.4.0:beta2::::::
	cpe:2.3:a:openvpn:openvpn:2.4.0:rc1::::::
	cpe:2.3:a:openvpn:openvpn:2.4.0:rc2::::::
	cpe:2.3:a:openvpn:openvpn:2.4.1:::::::*

History

No history.

Information

Published : 2017-05-15 18:29

Updated : 2019-10-03 00:03

NVD link : CVE-2017-7479

Mitre link : CVE-2017-7479

CVE.ORG link : CVE-2017-7479

JSON object : View

Products Affected

openvpn

openvpn

CWE

CWE-617

Reachable Assertion

{"id": "CVE-2017-7479", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "published": "2017-05-15T18:29:00.340", "references": [{"url": "http://www.debian.org/security/2017/dsa-3900", "source": "secalert@redhat.com"}, {"url": "http://www.securityfocus.com/bid/98443", "source": "secalert@redhat.com"}, {"url": "http://www.securitytracker.com/id/1038473", "source": "secalert@redhat.com"}, {"url": "https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits", "tags": ["Vendor Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-617"}]}, {"type": "Secondary", "source": "secalert@redhat.com", "description": [{"lang": "en", "value": "CWE-617"}]}], "descriptions": [{"lang": "en", "value": "OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker."}, {"lang": "es", "value": "OpenVPN versiones anteriores a 2.3.15 y anteriores a 2.4.2, son vulnerables a una aserci\u00f3n alcanzable cuando el contador del identificador de paquete se devuelve como resultado de una denegaci\u00f3n de servicio del servidor por parte de un atacante autenticado."}], "lastModified": "2019-10-03T00:03:26.223", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2B92389B-7815-40EC-AA21-14154621BFAC", "versionEndIncluding": "2.3.14"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "84F5C67A-34A4-4C7E-BCA9-AF3E5FC70AF6"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:alpha2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A857CA88-60B0-4D34-87B6-770B67981501"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B42297EE-B347-4BD8-A657-BDF0AA010C06"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:beta2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7C7A56E8-09C8-4DB2-9244-9E5E2BEC1821"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "41ACD637-EF6B-40E4-BDE6-0EE7D6AEBAD4"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1A4150AD-3F46-487D-BCF8-79D0AE2A092D"}, {"criteria": "cpe:2.3:a:openvpn:openvpn:2.4.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E7F7663E-3EB5-44F4-B7DE-294A549A12BE"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}