CVE-2024-20454: cisco cisco small business ip phones Classic Buffer Overflow

Vulnerability summary

CVE-2024-20454 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in cisco cisco small business ip phones. EPSS estimates a 6.60% chance of exploitation in the next 30 days, higher than 93.7% of scored vulnerabilities.

Timeline

1. 07-08-2024
   PublishedVulnerability first disclosed.
2. 25-08-2024
   Last modifiedVulnerability information updated.

Description

Multiple vulnerabilities in the web-based management interface of Cisco Small Business SPA300 Series IP Phones and Cisco Small Business SPA500 Series IP Phones could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system with root privileges. These vulnerabilities exist because incoming HTTP packets are not properly checked for errors, which could result in a buffer overflow. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to overflow an internal buffer and execute arbitrary commands at the root privilege level.

• 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.