#VU78879 Input validation error in Seiko Epson Corporation products - CVE-2023-38556

Vulnerability identifier: #VU78879

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-2023-38556

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
EP-801A
Hardware solutions / Office equipment, IP-phones, print servers
EP-802A
Hardware solutions / Office equipment, IP-phones, print servers
EP-901A
Hardware solutions / Office equipment, IP-phones, print servers
EP-901F
Hardware solutions / Office equipment, IP-phones, print servers
EP-902A
Hardware solutions / Office equipment, IP-phones, print servers
PA-TCU1
Hardware solutions / Office equipment, IP-phones, print servers
PM-T960
Hardware solutions / Office equipment, IP-phones, print servers
PM-T990
Hardware solutions / Office equipment, IP-phones, print servers
PX-201
Hardware solutions / Office equipment, IP-phones, print servers
PX-502A
Hardware solutions / Office equipment, IP-phones, print servers
PX-601F
Hardware solutions / Office equipment, IP-phones, print servers
PX-602F
Hardware solutions / Office equipment, IP-phones, print servers

Vendor: Seiko Epson Corporation

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the Web Config. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

EP-801A: All versions

EP-802A: All versions

EP-901A: All versions

EP-901F: All versions

EP-902A: All versions

PA-TCU1: All versions

PM-T960: All versions

PM-T990: All versions

PX-201: All versions

PX-502A: All versions

PX-601F: All versions

PX-602F: All versions

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External links
https://jvn.jp/en/jp/JVN61337171/index.html
https://www.epson.jp/support/misc_t/230802_oshirase.htm

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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.