#VU57571 Authentication Bypass by Capture-replay in Versiondog - CVE-2021-38459

Vulnerability identifier: #VU57571

Vulnerability risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-38459

CWE-ID: CWE-294

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Versiondog
Other software / Other software solutions

Vendor: AUVESY

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the data of a network capture of the initial handshake phase can be used to authenticate at a SYSDBA level. A remote attacker can bypass authentication process and change user passwords or delete the database.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Versiondog: 5.0.0 - 7.5.0

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-292-01

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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.