SB2023011716 - Multiple vulnerabilities in Zyxel AX7501-B0

Description

This security bulletin contains information about 2 vulnerabilities.

1) Cleartext storage of sensitive information (CVE-ID: CVE-2022-45439)

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a pair of spare WiFi credentials is stored in the configuration file in cleartext. A local user can use the credentials to access the WLAN service.

2) Link following (CVE-ID: CVE-2022-45440)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to the FTP server processes symbolic links on external storage media. A local administrator can create a symbolic link on external storage media and access the root file system.

Remediation

Install update from vendor's website.

References

• 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