Improper Symbolic Link Handling in Zyxel Router Firmware
CVE-2022-45440

4.4MEDIUM

Key Information:

Vendor
Zyxel
Status
Ax7501-b0 Firmware
Vendor
CVE Published:
17 January 2023

Summary

A vulnerability in the FTP server of the Zyxel AX7501-B0 firmware allows a local authenticated attacker with administrator privileges to access the root file system. This is achieved by creating a symbolic link on external storage devices such as USB drives, which can be exploited after logging into the FTP server of the vulnerable device. This flaw highlights the potential security risks associated with improper symbolic link handling.

Affected Version(s)

AX7501-B0 firmware < V5.17(ABPC.3)C0

References

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

CVSS V3.1

Score:
4.4
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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