Remote code execution in BUFFALO LinkStation 200 series

1) Improper validation of integrity check value

EUVDB-ID: #VU87710

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-51073

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient verification of data authenticity during firmware update. A remote attacker can a man-in-the-middle (MitM) attack and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

LS210D: 1.08

LS220D: 1.08

LS220DR: 1.08

LS220DB: 1.08

External links

http://www.buffalotech.com
http://github.com/christopher-pace/CVE-2023-51073/
http://jvn.jp/en/vu/JVNVU90953541/index.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.