CVE-2021-1287: cisco cisco small business rv series router firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2021-1287 is a high (CVSS 9.0) Stack-based Buffer Overflow vulnerability in cisco cisco small business rv series router firmware. EPSS estimates a 2.28% chance of exploitation in the next 30 days, higher than 82.8% of scored vulnerabilities.

Timeline

1. 18-03-2021
   PublishedVulnerability first disclosed.
2. 08-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the web-based management interface of Cisco RV132W ADSL2+ Wireless-N VPN Routers and Cisco RV134W VDSL2 Wireless-AC VPN Routers could allow an authenticated, remote attacker to execute arbitrary code on an affected device or cause the device to restart unexpectedly. The vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the device to reload, resulting in a denial of service (DoS) condition on the affected device.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).