7.5
CWE
120
Advisory Published
Updated

CVE-2024-20451

First published: Wed Aug 07 2024(Updated: )

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 cause an affected device to reload unexpectedly. These vulnerabilities exist because HTTP packets are not properly checked for errors. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the remote interface of an affected device. A successful exploit could allow the attacker to cause a DoS condition on the device.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
All of
Cisco SPA 301 Firmware
Cisco SPA 301 1-line IP Phone
All of
Cisco SPA 303 Firmware
Cisco SPA300 Series IP Phone
All of
Cisco SPA 501G Firmware
Cisco SPA 501G
All of
Cisco SPA 502G Firmware
Cisco SPA 502G 1-Line IP Phone
All of
Cisco SPA504G
Cisco SPA 504G
All of
Cisco SPA508G Firmware
Cisco SPA500 series IP phone
All of
Cisco SPA509G Firmware
Cisco SPA 509g 12-line IP Phone
All of
Cisco SPA 512G Firmware
Cisco SPA 512G 1-line IP Phone
All of
Cisco SPA 514G Firmware
Cisco SPA514G
All of
Cisco SPA 525G2 Firmware
Cisco SPA 525g 5-Line IP Phone
All of
Cisco SPA 525G2 Firmware
Cisco SPA 525G2 5-Line IP Phone

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Frequently Asked Questions

  • What is the severity of CVE-2024-20451?

    CVE-2024-20451 has been classified as a high severity vulnerability that can allow unauthenticated remote attackers to cause device reloads.

  • How do I fix CVE-2024-20451?

    To mitigate CVE-2024-20451, users should update their Cisco Small Business SPA300 or SPA500 Series IP Phones to the latest firmware releases provided by Cisco.

  • What devices are affected by CVE-2024-20451?

    CVE-2024-20451 affects various Cisco Small Business SPA300 and SPA500 Series IP Phones that have outdated firmware.

  • Can CVE-2024-20451 be exploited remotely?

    Yes, CVE-2024-20451 can be exploited by an unauthenticated remote attacker without requiring physical access to the device.

  • What are the consequences of CVE-2024-20451 exploitation?

    Exploitation of CVE-2024-20451 can lead to unexpected device reloads, potentially disrupting service for users.

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