Amazon Linux AMI update for openvpn



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-0547
CWE-ID CWE-287
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

openvpn
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains one medium risk vulnerability.

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

Update the affected packages:

i686:
    openvpn-devel-2.4.12-1.43.amzn1.i686
    openvpn-2.4.12-1.43.amzn1.i686
    openvpn-debuginfo-2.4.12-1.43.amzn1.i686

src:
    openvpn-2.4.12-1.43.amzn1.src

x86_64:
    openvpn-devel-2.4.12-1.43.amzn1.x86_64
    openvpn-debuginfo-2.4.12-1.43.amzn1.x86_64
    openvpn-2.4.12-1.43.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

openvpn: before 2.4.12-1.43

CPE2.3 External links

https://alas.aws.amazon.com/ALAS-2023-1719.html


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.



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