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CVE-2017-7521 Details

Description

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().

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243 CVEVendor Advisory
http://www.debian.org/security/2017/dsa-3900 CVE
http://www.securityfocus.com/bid/99230 CVEThird Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038768 CVE
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243 [email protected]Vendor Advisory

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-415Double Free[email protected]
CWE-772Missing Release of Resource after Effective Lifetime[email protected]
CWE-400Uncontrolled Resource Consumption[email protected]

Affected Products

ProductVersions
openvpn openvpn
<= 2.3.16
2.4.0
2.4.0 alpha2
2.4.0 beta1
2.4.0 beta2

CPE

  • 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:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2017-7521
NVD Published Date:
Jun 27, 2017
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]