CVE-2017-7521

moderate-risk
Published 2017-06-27

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().

Do I need to act?

-
0.45% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (9)

Affected Vendors

Openvpn

References (8)

http://www.debian.org/security/2017/dsa-3900
Third Party Advisory http://www.securityfocus.com/bid/99230
http://www.securitytracker.com/id/1038768
Vendor Advisory https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
http://www.debian.org/security/2017/dsa-3900
Third Party Advisory http://www.securityfocus.com/bid/99230
http://www.securitytracker.com/id/1038768
Vendor Advisory https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
35
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 15/34 · Moderate