vulnerability
Arch Linux: Denial of service (CVE-2017-7478)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | May 15, 2017 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
May 15, 2017
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue has been found in OpenVPN <= 2.4.1 where an unauthenticated attacker can send a packet with an unexpected payload size during SSL handshake, causing a server shutdown. Servers using tls-auth are protected against this attack as packets with an invalid HMAC are discarded before being processed by the vulnerable code.
Solution
arch-linux-upgrade-latest
References
- CVE-2017-7478
- https://attackerkb.com/topics/CVE-2017-7478
- URL-http://blog.quarkslab.com/security-assessment-of-openvpn.html
- URL-http://www.securityfocus.com/bid/98444
- URL-http://www.securitytracker.com/id/1038473
- URL-https://community.openvpn.net/openvpn/wiki/QuarkslabAndCryptographyEngineerAudits
- URL-https://ostif.org/the-openvpn-2-4-0-audit-by-ostif-and-quarkslab-results/
- URL-https://security.archlinux.org/ASA-201705-16
- URL-https://www.exploit-db.com/exploits/41993/
- CWE-617
- CWE-20
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