CVE-2017-7521

OpenVPN 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().

CVSS v3 5.9 MEDIUM
CVSS v2.0 4.3 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

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

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

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/99230	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1038768
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243	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:::::::*
	cpe:2.3:a:openvpn:openvpn:2.4.2:::::::*

History

No history.

Information

Published : 2017-06-27 13:29

Updated : 2023-12-10 12:15

NVD link : CVE-2017-7521

Mitre link : CVE-2017-7521

CVE.ORG link : CVE-2017-7521

JSON object : View

Products Affected

openvpn

openvpn

CWE

CWE-415

Double Free

CWE-772

Missing Release of Resource after Effective Lifetime

CWE-400

Uncontrolled Resource Consumption

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