CVE-2017-7521
5.9
MEDIUM
CVSS 3.1
EPSS 0.54%
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().
How to fix CVE-2017-7521
To remediate CVE-2017-7521, upgrade the affected package to a fixed version below.
- Debian/openvpn—upgrade to 2.4.3-1 or later
Is CVE-2017-7521 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.4.3-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |