Vulnerability Report

CVE-2017-7478

Title: Openvpn Denial of Service (DoS)

DoS

Proof Of Concept

PoC Available for CVE-2017-7478

CWE Category CWE-20

Published Date May 15, 2017

Modified Date Jun 17, 2026

Exploit Status Available

Score 7.5 CVSS v3.0

Exploit Probability (EPSS)

13.89%

Vulnerability Summary

CVE-2017-7478: 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.

Impacted Vendors

openvpn 1

aviatrix 1

Reference Links

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/ 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/

CVSS v3.0

Source Entity [email protected]

Severity HIGH

7.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

5.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns