CVE-2017-7521
medium
CVSS v3
5.9
CVSS v4 NEW
—
VIR risk
5.9
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().
Predictions
Exploit likelihood
69%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 2.4.3-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 2.4.3-1 |
| debian | bullseye | fixed | 2.4.3-1 |
| debian | forky | fixed | 2.4.3-1 |
| debian | sid | fixed | 2.4.3-1 |
| debian | trixie | fixed | 2.4.3-1 |
References
- https://security.archlinux.org/ASA-201706-27
- http://www.debian.org/security/2017/dsa-3900
- http://www.securityfocus.com/bid/99230
- http://www.securitytracker.com/id/1038768
- https://community.openvpn.net/openvpn/wiki/VulnerabilitiesFixedInOpenVPN243
- https://www.suse.com/security/cve/CVE-2017-7521.html
- https://security-tracker.debian.org/tracker/CVE-2017-7521
CWEs
CWE-400 CWE-415 CWE-772
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.