SB2023011724 - Multiple vulnerabilities in ASUS Routers

Description

This security bulletin contains information about 3 vulnerabilities.

1) Buffer overflow (CVE-ID: CVE-2022-38105)

CWE-ID: CWE-119 - Memory corruption

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

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary error in the cm_processREQ_NC opcode. A remote attacker can trigger memory corruption and gain unauthorized access to sensitive information on the system.

2) Out-of-bounds read (CVE-ID: CVE-2022-38393)

CWE-ID: CWE-125 - Out-of-bounds read

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

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the cfg_server cm_processConnDiagPktList opcode. A remote attacker can trigger out-of-bounds read error and cause a denial of service condition on the system.

3) Use of a Key Past its Expiration Date (CVE-ID: CVE-2022-35401)

CWE-ID: CWE-324 - Use of a Key Past its Expiration Date

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

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to authentication bypass issue in the get_IFTTTTtoken.cgi functionality. A remote attacker can send specially crafted HTTP requests and gain full administrative access to the device.

Remediation

Install update from vendor's website.

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2022-1590
• https://www.hkcert.org/security-bulletin/asus-router-multiple-vulnerabilities_20230620
• https://www.asus.com/content/asus-product-security-advisory/#06/19/2023
• https://talosintelligence.com/vulnerability_reports/TALOS-2022-1592
• https://talosintelligence.com/vulnerability_reports/TALOS-2022-1586