CVE-2023-22917

Home/CVE/A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5

CVE

A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5

A buffer overflow vulnerability in the “sdwan_iface_ipc” binary of Zyxel ATP series firmware versions 5.10 through 5.32, USG FLEX series firmware versions 5.00 through 5.32, USG FLEX 50(W) firmware versions 5.10 through 5.32, USG20(W)-VPN firmware versions 5.10 through 5.32, and VPN series firmware versions 5.00 through 5.35, which could allow a remote unauthenticated attacker to cause a core dump with a request error message on a vulnerable device by uploading a crafted configuration file.

HIGH · CVSS 7.5 EPSS 0.00559

Schedule remediation

SSVC automatable: yes - attacks can be scripted at scale
CVSS base score ≥ 7.0

Sigma rules0 YARA rules0

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Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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Affected Products & Versions

zyxel usg flex 100 firmware>= 5.00 and <= 5.32
zyxel usg flex 100w firmware>= 5.00 and <= 5.32
zyxel usg flex 200 firmware>= 5.00 and <= 5.32
zyxel usg flex 50 firmware>= 5.00 and <= 5.32
zyxel usg flex 50w firmware>= 5.10 and <= 5.32
zyxel usg flex 500 firmware>= 5.00 and <= 5.32
zyxel usg flex 700 firmware>= 5.00 and <= 5.32
zyxel vpn100 firmware>= 5.00 and <= 5.35
Show all 18 affected productszyxel vpn1000 firmware>= 5.00 and <= 5.35
zyxel vpn300 firmware>= 5.00 and <= 5.35
zyxel vpn50 firmware>= 5.00 and <= 5.35
zyxel usg 20w-vpn firmware>= 5.10 and <= 5.32
zyxel atp100 firmware>= 5.10 and <= 5.32
zyxel atp100w firmware>= 5.10 and <= 5.32
zyxel atp200 firmware>= 5.10 and <= 5.32
zyxel atp500 firmware>= 5.10 and <= 5.32
zyxel atp700 firmware>= 5.10 and <= 5.32
zyxel atp800 firmware>= 5.10 and <= 5.32

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Scoring & Timeline

7.5

HIGH · CVSS v3.1 · security@zyxel.com.tw

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD24 Apr 2023 · 05:15 PM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

yes

Technical impact

partial

SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

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

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