#VU64055 CRLF injection in ZyXEL Communications Corp. products
Published: June 8, 2022
Vulnerability identifier: #VU64055
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
USG100
USG200
USG300
USG20W
USG20
USG50
USG100
USG200
USG300
USG20W
USG20
USG50
Software vendor:
ZyXEL Communications Corp.
ZyXEL Communications Corp.
Description
The vulnerability allows a remote attacker to inject arbitrary data in server response.
The vulnerability exists due to insufficient validation of attacker-supplied data in the CGI program. A remote attacker can pass specially crafted data to the application containing CR-LF characters and modify application behavior.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.