Bug 835514 (CVE-2022-0547)

Summary:	<net-vpn/openvpn-2.5.6: potential authentication by-pass with multiple deferred authentication plug-ins
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	IN_PROGRESS ---
Severity:	minor	CC:	alexander, chutzpah, hydrapolic, maracay, williamh
Priority:	Normal	Keywords:	PullRequest
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://community.openvpn.net/openvpn/wiki/CVE-2022-0547
See Also:	https://github.com/gentoo/gentoo/pull/25120
Whiteboard:	B4 [glsa cleanup]
Package list:		Runtime testing required:	---
Bug Depends on:	818436, 848969
Bug Blocks:

Description John Helmert III archtester

2022-03-17 18:23:41 UTC

From URL, "OpenVPN 2.1 up to v2.4.11 and v2.5.5 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.

This issue is resolved in OpenVPN 2.4.12 and v2.5.6 where the OpenVPN server process will stop running with the following error message in the logs:

Exiting due to multiple authentication plug-ins performing deferred authentication.  Only one authentication plug-in doing deferred auth is allowed.  Ignoring the result and stopping now, the current authentication result is not to be trusted."

Please bump to 2.5.6.

Comment 1 Larry the Git Cow gentoo-dev

2022-04-23 01:34:25 UTC

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=d85036d80926637fb9170e9a02ca9c6f3f35086b

commit d85036d80926637fb9170e9a02ca9c6f3f35086b
Author:     Tomáš Mózes <hydrapolic@gmail.com>
AuthorDate: 2022-04-19 22:41:00 +0000
Commit:     Sam James <sam@gentoo.org>
CommitDate: 2022-04-23 01:22:45 +0000

    net-vpn/openvpn: bump to 2.5.6
    
    Bug: https://bugs.gentoo.org/835514
    Closes: https://bugs.gentoo.org/818436
    Signed-off-by: Tomáš Mózes <hydrapolic@gmail.com>
    Closes: https://github.com/gentoo/gentoo/pull/25120
    Signed-off-by: Sam James <sam@gentoo.org>

 net-vpn/openvpn/Manifest             |   1 +
 net-vpn/openvpn/openvpn-2.5.6.ebuild | 197 +++++++++++++++++++++++++++++++++++
 2 files changed, 198 insertions(+)

Comment 2 Sam James archtester

2022-04-23 02:00:31 UTC

Please stable when ready.

Comment 3 John Helmert III archtester

2022-06-06 15:51:36 UTC

Please cleanup