#VU69304 Format string error in Moxa products - CVE-2022-38157

Vulnerability identifier: #VU69304

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-38157

CWE-ID: CWE-134

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VPort P16-1MP-M12
Hardware solutions / Routers & switches, VoIP, GSM, etc
VPort P16-1MP-M12-IR
Hardware solutions / Routers & switches, VoIP, GSM, etc
VPort P06-1MP-M12
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: Moxa

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a format string error in the RTSP service. A remote attacker can supply a specially crafted input that contains format string specifiers and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VPort P16-1MP-M12: 1.3

VPort P16-1MP-M12-IR: 1.4

VPort P06-1MP-M12: 2.6

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External links
https://www.moxa.com/en/support/product-support/security-advisory/moxa-vport-series-improper-input-validation-vulnerability

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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.