CVE-2017-7521

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Summary

CVECVE-2017-7521
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-06-27 13:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionOpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().

Risk And Classification

Primary CVSS: v3.0 5.9 MEDIUM from [email protected]

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-400 | CWE-415 | CWE-772 | CWE-400 CWE-400

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary5.9MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary4.3AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:M/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Openvpn Openvpn 2.4.0 All All All
Application Openvpn Openvpn 2.4.0 alpha2 All All
Application Openvpn Openvpn 2.4.0 beta1 All All
Application Openvpn Openvpn 2.4.0 beta2 All All
Application Openvpn Openvpn 2.4.0 rc1 All All
Application Openvpn Openvpn 2.4.0 rc2 All All
Application Openvpn Openvpn 2.4.1 All All All
Application Openvpn Openvpn 2.4.2 All All All
Application Openvpn Openvpn All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OpenVPN Technologies Inc OpenVPN affected before 2.4.3 Not specified
CNA OpenVPN Technologies Inc OpenVPN affected before 2.3.17 Not specified

References

ReferenceSourceLinkTags
OpenVPN Multiple Flaws Let Remote Users Obtain Potentially Sensitive Information, Deny Service, and Execute Arbitrary Code - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
OpenVPN Multiple Security Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Debian -- Security Information -- DSA-3900-1 openvpn af854a3a-2127-422b-91ae-364da2661108 www.debian.org
VulnerabilitiesFixedInOpenVPN243 – OpenVPN Community af854a3a-2127-422b-91ae-364da2661108 community.openvpn.net Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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