918673 – (CVE-2020-20813) net-vpn/openvpn: DoS via crafted reset packet

Bug 918673 (CVE-2020-20813) - net-vpn/openvpn: DoS via crafted reset packet

Summary: net-vpn/openvpn: DoS via crafted reset packet

Status:	CONFIRMED

Alias:	CVE-2020-20813

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal minor
Assignee:	Gentoo Security

URL:	https://www.freebuf.com/vuls/215171.html
Whiteboard:	B3 [upstream]
Keywords:

Depends on:
Blocks:

Reported:	2023-11-27 19:36 UTC by John Helmert III
Modified:	2023-11-28 18:24 UTC (History)
CC List:	3 users (show)

See Also:
Package list:
Runtime testing required:	---

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Description John Helmert III archtester

2023-11-27 19:36:45 UTC

CVE-2020-20813:

Control Channel in OpenVPN 2.4.7 and earlier allows remote attackers to cause a denial of service via crafted reset packet.

Advisory is only in Chinese but seems to translate well with Google
Translate. It seems to be documenting some kind of DDoS amplification
which involved OpenVPN but it's not actually clear to me based on that
whether this is a real vulnerability in OpenVPN or some kind of
misconfiguration.