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[email protected]CVE-2023-4397

HistoryNov 28, 2023 - 2:15 a.m.

CVE-2023-4397

2023-11-2802:15:42

CWE-120

[email protected]

web.nvd.nist.gov

cve-2023-4397

buffer overflow

zyxel atp

usg

firmware

denial of service

dos

nvd

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

A buffer overflow vulnerability in the Zyxel ATP series firmware version 5.37, USG FLEX series firmware version 5.37, USG FLEX 50(W) series firmware version 5.37, and USG20(W)-VPN series firmware version 5.37, could allow an authenticated local attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing the CLI command with crafted strings on an affected device.

Affected configurations

NVD

Node

zyxelatp100Match-

zyxelatp100wMatch-

zyxelatp200Match-

zyxelatp500Match-

zyxelatp700Match-

zyxelatp800Match-

AND

zyxelzldMatch5.37

Node

zyxelusg_flex_100Match-

zyxelusg_flex_100wMatch-

zyxelusg_flex_200Match-

zyxelusg_flex_50Match-

zyxelusg_flex_500Match-

zyxelusg_flex_50wMatch-

zyxelusg_flex_700Match-

AND

zyxelzldMatch5.37

Node

zyxelusg_20w-vpnMatch-

zyxelvpn50wMatch-

AND

zyxelzldMatch5.37

CPENameOperatorVersion
zyxel:zldzyxel zldeq5.37

CPE	Name	Operator	Version
zyxel:zld	zyxel zld	eq	5.37

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "ATP series firmware",
    "vendor": "Zyxel",
    "versions": [
      {
        "status": "affected",
        "version": "5.37"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "USG FLEX series firmware",
    "vendor": "Zyxel",
    "versions": [
      {
        "status": "affected",
        "version": "5.37"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": " USG FLEX 50(W) series firmware",
    "vendor": "Zyxel",
    "versions": [
      {
        "status": "affected",
        "version": "5.37"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "USG20(W)-VPN series firmware",
    "vendor": "Zyxel",
    "versions": [
      {
        "status": "affected",
        "version": "5.37"
      }
    ]
  }
]

References

www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-and-aps

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

5.1%

JSON

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