Unauthorized Remote Attack on IP Phones Could Cause Device Reload

CVE-2024-20451

Summary

Multiple vulnerabilities exist in the web-based management interface of Cisco Small Business SPA300 Series and SPA500 Series IP Phones, allowing an unauthenticated remote attacker to exploit weaknesses in error handling of HTTP packets. By sending specially crafted HTTP packets to the remote interface of the devices, an attacker could initiate unexpected reloads, leading to a denial of service condition. This vulnerability poses a significant risk as it can disrupt communications for users relying on these devices.

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