CVE-2018-8879: asus rt-ac66u\+_firmware Out-of-bounds Write

Vulnerability summary

CVE-2018-8879 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in asus rt-ac66u\+_firmware. EPSS estimates a 17.19% chance of exploitation in the next 30 days, higher than 97% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 21-11-2019
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

Stack-based buffer overflow in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote attackers to execute arbitrary code by providing a long string to the blocking.asp page via a GET or POST request. Vulnerable parameters are flag, mac, and cat_id.

• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.