CVE-2023-4397: Buffer Overflow
First published: Tue Nov 28 2023(Updated: )
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.
Credit: security@zyxel.com.tw
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| Zyxel Zld | =5.37 | |
| Any of | ||
| Zyxel Multiple Network-Attached Storage (NAS) Devices | ||
| Zyxel Atp100w | ||
| Zyxel ATP200 | ||
| Zyxel Atp500 | ||
| Zyxel Atp700 | ||
| Zyxel Atp800 | ||
| All of | ||
| Zyxel Zld | =5.37 | |
| Any of | ||
| Zyxel Usg Flex 100 | ||
| Zyxel Usg Flex 100w | ||
| Zyxel Usg Flex 200 | ||
| Zyxel Usg Flex 50 | ||
| Zyxel Usg Flex 500 | ||
| Zyxel Usg Flex 50w | ||
| Zyxel Usg Flex 700 | ||
| All of | ||
| Zyxel Zld | =5.37 | |
| Any of | ||
| Zyxel Usg 20w-vpn | ||
| Zyxel Vpn50w |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-4397?
The severity of CVE-2023-4397 is medium.
How can an attacker exploit CVE-2023-4397?
An attacker with administrator privileges can exploit CVE-2023-4397 by causing a denial-of-service or potentially executing arbitrary code.
Which software versions are affected by CVE-2023-4397?
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 are affected by CVE-2023-4397.
Is authentication required to exploit CVE-2023-4397?
Yes, authentication is required to exploit CVE-2023-4397.
How to mitigate CVE-2023-4397?
Apply the latest firmware patch provided by Zyxel to mitigate CVE-2023-4397.
- collector/nvd-api
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/type
- agent/tags
- agent/description
- agent/event
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- vendor/zyxel
- canonical/zyxel zld
- version/zyxel zld/5.37
- canonical/zyxel multiple network-attached storage (nas) devices
- canonical/zyxel atp100w
- canonical/zyxel atp200
- canonical/zyxel atp500
- canonical/zyxel atp700
- canonical/zyxel atp800
- canonical/zyxel usg flex 100
- canonical/zyxel usg flex 100w
- canonical/zyxel usg flex 200
- canonical/zyxel usg flex 50
- canonical/zyxel usg flex 500
- canonical/zyxel usg flex 50w
- canonical/zyxel usg flex 700
- canonical/zyxel usg 20w-vpn
- canonical/zyxel vpn50w