SB2021042817 - Heap-based buffer overflow in NETGEAR R7000

Description

This security bulletin contains information about 1 security vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2021-31802)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in backup.cgi file upload. A remote attacker on the local network can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/
• https://www.netgear.com/about/security/