What is the vulnerability ID of this FTP server vulnerability?

The vulnerability ID is CVE-2022-45440.

What is the severity of CVE-2022-45440?

The severity of CVE-2022-45440 is medium with a CVSS score of 4.4.

How does the vulnerability in the Zyxel AX7501-B0 firmware FTP server affect the system?

The vulnerability allows a local authenticated attacker with administrator privileges to access the root file system by creating symbolic links on external storage media.

Is the Zyxel AX7501-B0 firmware version prior to V5.17(ABPC.3)C0 affected by this vulnerability?

Yes, the Zyxel AX7501-B0 firmware version prior to V5.17(ABPC.3)C0 is affected by this vulnerability.

How can an attacker exploit this vulnerability?

An attacker with administrator privileges can abuse the vulnerability to access the root file system by creating symbolic links on external storage media.

Vulnerability/
CVE-2022-45440

medium

4.4

CWE

59 552

17/1/2023

3/8/2024

CVE-2022-45440

First published: Tue Jan 17 2023(Updated: )

A vulnerability exists in the FTP server of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0, which processes symbolic links on external storage media. A local authenticated attacker with administrator privileges could abuse this vulnerability to access the root file system by creating a symbolic link on external storage media, such as a USB flash drive, and then logging into the FTP server on a vulnerable device.

Credit: security@zyxel.com.tw

Affected Software	Affected Version	How to fix
Zyxel AX7501-B0 firmware	<5.17\(abpc.3\)c0
Zyxel AX7501-B0

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Reference Links

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-cleartext-storage-of-wifi-credentials-and-improper-symbolic-links-of-ftp-for-ax7501-b0-cpe

Frequently Asked Questions

What is the vulnerability ID of this FTP server vulnerability?
The vulnerability ID is CVE-2022-45440.
What is the severity of CVE-2022-45440?
The severity of CVE-2022-45440 is medium with a CVSS score of 4.4.
How does the vulnerability in the Zyxel AX7501-B0 firmware FTP server affect the system?
The vulnerability allows a local authenticated attacker with administrator privileges to access the root file system by creating symbolic links on external storage media.
Is the Zyxel AX7501-B0 firmware version prior to V5.17(ABPC.3)C0 affected by this vulnerability?
Yes, the Zyxel AX7501-B0 firmware version prior to V5.17(ABPC.3)C0 is affected by this vulnerability.
How can an attacker exploit this vulnerability?
An attacker with administrator privileges can abuse the vulnerability to access the root file system by creating symbolic links on external storage media.

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canonical/zyxel ax7501-b0 firmware
canonical/zyxel ax7501-b0

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