openEuler update for openvpn

1) Improper Authentication

EUVDB-ID: #VU61608

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-0547

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when processing authentication requests in external authentication plug-ins when more than one of them makes use of deferred authentication replies. A remote attacker can bypass authentication process and gain unauthorized access to the network with only partially correct credentials.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

openvpn-help: before 2.4.8-8

openvpn-debugsource: before 2.4.8-8

openvpn-debuginfo: before 2.4.8-8

openvpn-devel: before 2.4.8-8

openvpn: before 2.4.8-8

CPE2.3

• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP2:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
• cpe:2.3:o:openeuler:openvpn-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:openvpn:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1612

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.