Bug 2105077 (CVE-2021-4234) - CVE-2021-4234 openvpn: limited amplification attack
Summary: CVE-2021-4234 openvpn: limited amplification attack
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-4234
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2120485 2120486
Blocks: 2105078
TreeView+ depends on / blocked
 
Reported: 2022-07-07 20:32 UTC by Sage McTaggart
Modified: 2022-09-02 15:35 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2022-09-02 15:35:12 UTC
Embargoed:

Attachments (Terms of Use)

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.
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