CVE-2023-46849

Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service.

CVSS v3 7.5 HIGH

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

References

Link	Resource
https://community.openvpn.net/openvpn/wiki/CVE-2023-46849	Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/	Mailing List
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/
https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/	Vendor Advisory
https://www.debian.org/security/2023/dsa-5555	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:openvpn:openvpn:::::community:::*
	cpe:2.3:a:openvpn:openvpn_access_server::::::::
	cpe:2.3:a:openvpn:openvpn_access_server:2.12.0:::::::*
	cpe:2.3:a:openvpn:openvpn_access_server:2.12.1:::::::*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:12.0:::::::*
	cpe:2.3:o:fedoraproject:fedora:39:::::::*

History

No history.

Information

Published : 2023-11-11 01:15

Updated : 2023-11-29 03:15

NVD link : CVE-2023-46849

Mitre link : CVE-2023-46849

CVE.ORG link : CVE-2023-46849

JSON object : View

Products Affected

openvpn

openvpn
openvpn_access_server

debian

debian_linux

fedoraproject

fedora

CWE

CWE-369

Divide By Zero

{"id": "CVE-2023-46849", "cveTags": [], "metrics": {"cvssMetricV31": [{"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": "2023-11-11T01:15:07.270", "references": [{"url": "https://community.openvpn.net/openvpn/wiki/CVE-2023-46849", "tags": ["Vendor Advisory"], "source": "security@openvpn.net"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3FS46ANNTAVLIQY56ZKGM5CBTRVBUNE/", "tags": ["Mailing List"], "source": "security@openvpn.net"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O54I7D753V6PU6XBU26FEROD2DSHEJQ4/", "source": "security@openvpn.net"}, {"url": "https://openvpn.net/security-advisory/access-server-security-update-cve-2023-46849-cve-2023-46850/", "tags": ["Vendor Advisory"], "source": "security@openvpn.net"}, {"url": "https://www.debian.org/security/2023/dsa-5555", "tags": ["Third Party Advisory"], "source": "security@openvpn.net"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-369"}]}, {"type": "Secondary", "source": "security@openvpn.net", "description": [{"lang": "en", "value": "CWE-369"}]}], "descriptions": [{"lang": "en", "value": "Using the --fragment option in certain configuration setups OpenVPN version 2.6.0 to 2.6.6 allows an attacker to trigger a divide by zero behaviour which could cause an application crash, leading to a denial of service."}, {"lang": "es", "value": "El uso de la opci\u00f3n --fragment en ciertas configuraciones de OpenVPN versi\u00f3n 2.6.0 a 2.6.6 permite a un atacante desencadenar un comportamiento de divisi\u00f3n por cero que podr\u00eda provocar un bloqueo de la aplicaci\u00f3n y provocar una denegaci\u00f3n de servicio."}], "lastModified": "2023-11-29T03:15:42.383", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "3A398A7A-395F-4CA8-9D72-1DDD337D5074", "versionEndIncluding": "2.6.6", "versionStartIncluding": "2.6.0"}, {"criteria": "cpe:2.3:a:openvpn:openvpn_access_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "54464223-5988-40E7-B94B-D7B8DE999704", "versionEndIncluding": "2.11.3", "versionStartIncluding": "2.11.0"}, {"criteria": "cpe:2.3:a:openvpn:openvpn_access_server:2.12.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F8A71564-0966-47F0-BB81-B6BFA071E402"}, {"criteria": "cpe:2.3:a:openvpn:openvpn_access_server:2.12.1:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AC187755-A908-4CD5-8F35-869EA5D9A3B7"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46D69DCC-AE4D-4EA5-861C-D60951444C6C"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646"}], "operator": "OR"}]}], "sourceIdentifier": "security@openvpn.net"}