CVE-2023-33010Zyxel Multiple Firewalls Buffer Overflow Vulnerability
Known exploited — Zyxel Multiple Firewalls Buffer Overflow Vulnerability
CISA confirmed this vulnerability is used in real attacks on 05.06.2023. Remediation deadline for US federal agencies: 26.06.2023.
Required action: Apply updates per vendor instructions. https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-buffer-overflow-vulnerabilities-of-firewalls; https://nvd.nist.gov/vuln/detail/CVE-2023-33010
Description
A buffer overflow vulnerability in the ID processing function in Zyxel ATP series firmware versions 4.32 through 5.36 Patch 1, USG FLEX series firmware versions 4.50 through 5.36 Patch 1, USG FLEX 50(W) firmware versions 4.25 through 5.36 Patch 1, USG20(W)-VPN firmware versions 4.25 through 5.36 Patch 1, VPN series firmware versions 4.30 through 5.36 Patch 1, ZyWALL/USG series firmware versions 4.25 through 4.73 Patch 1, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions and even a remote code execution on an affected device.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
References and patches
CPE matches (NVD) (60)
cpe:2.3:o:zyxel:atp100_firmware:*:*:*:*:*:*:*:*≥ 4.32 < 5.36cpe:2.3:o:zyxel:atp100_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:atp100_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:atp200_firmware:*:*:*:*:*:*:*:*≥ 4.32 < 5.36cpe:2.3:o:zyxel:atp200_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:atp200_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:atp500_firmware:*:*:*:*:*:*:*:*≥ 4.32 < 5.36cpe:2.3:o:zyxel:atp500_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:atp500_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:atp100w_firmware:*:*:*:*:*:*:*:*≥ 4.32 < 5.36cpe:2.3:o:zyxel:atp100w_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:atp100w_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:atp700_firmware:*:*:*:*:*:*:*:*≥ 4.32 < 5.36cpe:2.3:o:zyxel:atp700_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:atp700_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:atp800_firmware:*:*:*:*:*:*:*:*≥ 4.32 < 5.36cpe:2.3:o:zyxel:atp800_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:atp800_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*≥ 4.50 < 5.36cpe:2.3:o:zyxel:usg_flex_100_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_100_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*≥ 4.50 < 5.36cpe:2.3:o:zyxel:usg_flex_200_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_200_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*≥ 4.50 < 5.36cpe:2.3:o:zyxel:usg_flex_500_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_500_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*≥ 4.50 < 5.36cpe:2.3:o:zyxel:usg_flex_700_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_700_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*≥ 4.50 < 5.36cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_100w_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*≥ 4.25 < 5.36cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_flex_50w_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_20w-vpn_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_20w-vpn_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*≥ 4.30 < 5.36cpe:2.3:o:zyxel:vpn100_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn100_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*≥ 4.30 < 5.36cpe:2.3:o:zyxel:vpn50_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn50_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*≥ 4.30 < 5.36cpe:2.3:o:zyxel:vpn300_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn300_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*≥ 4.30 < 5.36cpe:2.3:o:zyxel:vpn1000_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:vpn1000_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg20-vpn_firmware:*:*:*:*:*:*:*:*≥ 4.30 < 5.36cpe:2.3:o:zyxel:usg20-vpn_firmware:5.36:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg20-vpn_firmware:5.36:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_40_firmware:*:*:*:*:*:*:*:*≥ 4.25 < 4.73cpe:2.3:o:zyxel:usg_40_firmware:4.73:-:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_40_firmware:4.73:patch1:*:*:*:*:*:*cpe:2.3:o:zyxel:usg_40w_firmware:*:*:*:*:*:*:*:*≥ 4.25 < 4.73cpe:2.3:o:zyxel:usg_40w_firmware:4.73:-:*:*:*:*:*:*