Information disclosure in ZyXEL Communications Corp. products - CVE-2023-22918

Vulnerability identifier: #VU75467

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-22918

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in the CGI program. A remote user can gain unauthorized access to sensitive information on the system.

NWA50AX-PRO
NWA220AX-6E
NWA50AX
NWA90AX
NWA90AX-PRO
WAX620D-6E
WAX630S
WAX640S-6E
WAX655E
NAP203
NAP303
NAP353
NWA1123-AC-PRO
WAC6103D-I
WAC6303D-S
WAC6502D-E
WAC6502D-S
WAC6503D-S
WAC6552D-S
WAC6553D-E
NWA110AX
NWA1123ACv3
NWA210AX
WAC500
WAC500H
WAX510D
WAX610D
WAX650S
USG FLEX 50W
USG20W-VPN
NWA5123-AC HD
WAC5302D-Sv2
ATP series
USG FLEX series
VPN series

Install updates from vendor's website.

NWA50AX-PRO - update to 6.55(ACGE.0)
NWA110AX - update to 6.55(ABTG.0)
NWA1123ACv3 - update to 6.55(ABVT.0)
NWA210AX - update to 6.55(ABTD.0)
NWA220AX-6E - update to 6.55(ACCO.0)
NWA50AX - update to 6.29(ABYW.2)
ATP series - update to 5.36
NWA90AX - update to 6.29(ACCV.2)
NWA90AX-PRO - update to 6.55(ACGF.0)
WAC500 - update to 6.55(ABVS.0)
WAC500H - update to 6.55(ABWA.0)
WAX510D - update to 6.55(ABTF.0)
WAX610D - update to 6.55(ABTE.0)
WAX620D-6E - update to 6.55(ACCN.0)
WAX630S - update to 6.55(ABZD.0)
WAX640S-6E - update to 6.55(ACCM.0)
WAX650S - update to 6.55(ABRM.0)
WAX655E - update to 6.55(ACDO.0)
USG FLEX 50W - update to 5.36
USG20W-VPN - update to 5.36
USG FLEX series - update to 5.36
VPN series - update to 5.36

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

• Multiple vulnerabilitiesin Zyxel firewalls and APs