CVE-2021-34236: netgear r8000_firmware Classic Buffer Overflow

Vulnerability summary

CVE-2021-34236 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in netgear r8000_firmware. EPSS estimates a 1.47% chance of exploitation in the next 30 days, higher than 73.6% of scored vulnerabilities.

Timeline

1. 07-09-2022
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account.cgi' with a sufficiently long parameter 'register_country'.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.