Bug 2105077 (CVE-2021-4234)

Summary:	CVE-2021-4234 openvpn: limited amplification attack
Product:	[Other] Security Response	Reporter:	Sage McTaggart <amctagga>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	huzaifas, klember, saroy, steve
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-09-02 15:35:12 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2120485, 2120486
Bug Blocks:	2105078

Description Sage McTaggart 2022-07-07 20:32:07 UTC

OpenVPN Access Server 2.10 and prior versions are susceptible to resending multiple packets in a response to a reset packet sent from the client which the client again does not respond to, resulting in a limited amplification attack.

https://openvpn.net/vpn-server-resources/release-notes/#openvpn-access-server-2-11-0

Comment 1 Sandipan Roy 2022-08-23 04:40:34 UTC

Created openvpn tracking bugs for this issue:

Affects: epel-all [bug 2120485]
Affects: fedora-all [bug 2120486]

Comment 2 David Sommerseth 2022-08-23 10:58:36 UTC

This is about OpenVPN ACCESS SERVER.  That is not a Fedora package project.  Removing myself from this ticket.

Comment 3 Product Security DevOps Team 2022-09-02 15:35:10 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.