#VU81634 Incorrect Implementation of Authentication Algorithm in DIR-X3260 - CVE-2023-44420

Vulnerability identifier: #VU81634

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-44420

CWE-ID: CWE-303

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
DIR-X3260
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: D-Link

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to incorrect implementation of authentication algorithm within the prog.cgi executable. A remote attacker on the local network can bypass authentication on the target device.

Mitigation
Install update from vendor's website.

Vulnerable software versions

DIR-X3260: 1.02b02

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External links
https://www.zerodayinitiative.com/advisories/ZDI-23-1518/
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10365

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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