#VU55434 Cross-site scripting in ZyXEL Communications Corp. products - CVE-2021-35030
Published: July 29, 2021
Vulnerability identifier: #VU55434
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-35030
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
GS1900-8
GS1900-8HP
GS1900-10HP
GS1900-16
GS1900-24E
GS1900-24EP
GS1900-24
GS1900-24HP
GS1900-24HPv2
GS1900-48
GS1900-48HP
GS1900-48HPv2
GS1900-8
GS1900-8HP
GS1900-10HP
GS1900-16
GS1900-24E
GS1900-24EP
GS1900-24
GS1900-24HP
GS1900-24HPv2
GS1900-48
GS1900-48HP
GS1900-48HPv2
Software vendor:
ZyXEL Communications Corp.
ZyXEL Communications Corp.
Description
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data in the CGI program. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Remediation
Install update from vendor's website.