SB2023030709 - Multiple vulnerabilities in Buffalo network devices

Description

This security bulletin contains information about 3 vulnerabilities.

1) Use of hard-coded credentials (CVE-ID: CVE-2023-26588)

CWE-ID: CWE-798 - Use of Hard-coded Credentials

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

The vulnerability allows a local attacker to compromise the system.

The vulnerability exists due to presence of hard-coded credentials in application code. An attacker with physical access can access the debug function of the product.

2) Improper access control (CVE-ID: CVE-2023-24544)

CWE-ID: CWE-284 - Improper Access Control

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

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker on the local network can bypass implemented security restrictions and alter the product settings.

3) Stored cross-site scripting (CVE-ID: CVE-2023-24464)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Install update from vendor's website.

References

• https://jvn.jp/en/vu/JVNVU96824262/index.html
• https://www.buffalo.jp/news/detail/20230306-01.html