Buffer Overflow Vulnerability in Zyxel DX5401-B0 Web Server
CVE-2023-28769

9.8CRITICAL

Key Information:

Vendor
Zyxel
Status
Dx5401-b0 Firmware
Vendor
CVE Published:
27 April 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 73%

Summary

A buffer overflow vulnerability in the 'libclinkc.so' library of the Zyxel DX5401-B0 web server allows remote unauthenticated attackers to execute OS commands, potentially compromising device integrity. Additionally, this vulnerability can be exploited to create denial-of-service conditions, affecting the performance and availability of the device. Users are advised to update to the latest firmware version to mitigate these risks.

Affected Version(s)

DX5401-B0 firmware < V5.17(ABYO.1)C0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

Metasploit exploit module for CVE-2023-28769
Created by Rapid7

References

https://www.zyxel.com/global/en/support/security-advisori...

EPSS Score

73% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

.