CVE-2017-7478
high
CVSS v3
7.5
CVSS v4 NEW
—
VIR risk
8.5
Description
OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet. Note that this issue is fixed in 2.3.15 and 2.4.2.
Predictions
Exploit likelihood
83%
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.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 2.4.2-1 | |
| debian | bookworm | fixed | 2.4.0-5 |
| debian | bullseye | fixed | 2.4.0-5 |
| debian | forky | fixed | 2.4.0-5 |
| debian | sid | fixed | 2.4.0-5 |
| debian | trixie | fixed | 2.4.0-5 |
References
- https://security.archlinux.org/ASA-201705-16
- http://www.securityfocus.com/bid/98444
- http://www.securitytracker.com/id/1038473
- https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits
- https://www.exploit-db.com/exploits/41993/
- https://security-tracker.debian.org/tracker/CVE-2017-7478
CWEs
CWE-617 CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.