OS Command Injection in ZyXEL Communications Corp. products - CVE-2023-6398

Vulnerability identifier: #VU86621

CSH Severity: Low

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-6398

CWE-ID: CWE-78

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the file upload binary. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

WAX300H
NWA55AXE
NWA90AX
NWA220AX-6E
WAX620D-6E
WAX630S
WAX640S-6E
WAX655E
WBE660S
NWA50AX
NWA90AX-PRO
NWA50AX-PRO
NWA110AX
NWA210AX
NWA1123ACv3
WAC500
WAC500H
WAX510D
WAX610D
WAX650S
USG20W-VPN
USG FLEX 50W
ATP series
USG FLEX series

Install updates from vendor's website.

WAX300H - update to 6.70(ACHF.1)
NWA55AXE - update to 6.29(ABZL.4)
NWA90AX - update to 6.29(ACCV.4)
NWA110AX - update to 6.70(ABTG.1)
NWA210AX - update to 6.70(ABTD.1)
NWA220AX-6E - update to 6.70(ACCO.1)
NWA1123ACv3 - update to 6.70(ABVT.1)
WAC500 - update to 6.70(ABVS.1)
WAC500H - update to 6.70(ABWA.1)
ATP series - update to 5.37 Patch 2
WAX510D - update to 6.70(ABTF.1)
WAX610D - update to 6.70(ABTE.1)
WAX620D-6E - update to 6.70(ACCN.1)
WAX630S - update to 6.70(ABZD.1)
WAX640S-6E - update to 6.70(ACCM.1)
WAX650S - update to 6.70(ABRM.1)
WAX655E - update to 6.70(ACDO.1)
WBE660S - update to 6.70(ACGG.1)
NWA50AX - update to 6.29(ABYW.4)
USG20W-VPN - update to 5.37 Patch 2
USG FLEX series - update to 5.37 Patch 2
USG FLEX 50W - update to 5.37 Patch 2

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps-02-20-2024

• Multiple vulnerabilities in Zyxel firewalls and APs