CVE-2017-7521

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().

Categories

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.52%
Vendor Advisory debian.org Vendor Advisory openvpn.net
Affected: OpenVPN Technologies, Inc OpenVPN
Published at:
Updated at:

References

Link Tags
https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243 vendor advisory
http://www.securitytracker.com/id/1038768 vdb entry
http://www.securityfocus.com/bid/99230 vdb entry third party advisory
http://www.debian.org/security/2017/dsa-3900 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-7521?
CVE-2017-7521 has been scored as a medium severity vulnerability.
How to fix CVE-2017-7521?
To fix CVE-2017-7521, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7521 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7521 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7521?
CVE-2017-7521 affects OpenVPN Technologies, Inc OpenVPN.
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