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ZyxelCVELIST:CVE-2023-4474

HistoryNov 30, 2023 - 1:45 a.m.

CVE-2023-4474

2023-11-3001:45:29

CWE-78

Zyxel

www.cve.org

wsgi server

zyxel nas326

nas542

firmware

vulnerability

remote code execution

unauthenticated attacker

operating system commands

crafted url

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.8

Confidence

High

EPSS

0.001

Percentile

41.6%

JSON

The improper neutralization of special elements in the WSGI server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "NAS326 firmware",
    "vendor": "Zyxel",
    "versions": [
      {
        "status": "affected",
        "version": "V5.21(AAZF.14)C0"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "NAS542 firmware",
    "vendor": "Zyxel",
    "versions": [
      {
        "status": "affected",
        "version": "V5.21(ABAG.11)C0"
      }
    ]
  }
]

References

bugprove.com/knowledge-hub/cve-2023-4473-and-cve-2023-4474-authentication-bypass-and-multiple-blind-os-command-injection-vulnerabilities-in-zyxel-s-nas-326-devices/

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.8

Confidence

High

EPSS

0.001

Percentile

41.6%

JSON

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