Cisco SPA300/SPA500 up to 7.6.2SR7 Web-based Management Interface buffer overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in Cisco SPA300 and SPA500. Affected by this issue is some unknown functionality of the component Web-based Management Interface. The manipulation results in buffer overflow. This vulnerability is reported as CVE-2024-20454. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco SPA300 and SPA500. It has been classified as very critical. Affected is some unknown functionality of the component Web-based Management Interface. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. 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, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at sec.cloudapps.cisco.com. This vulnerability is traded as CVE-2024-20454 since 11/08/2023. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/24/2024).

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

• Cisco

Name

• SPA300
• SPA500

Version

• 1.0.17
• 7.3.7
• 7.4.3
• 7.4.4
• 7.4.6
• 7.4.7
• 7.4.8
• 7.4.9
• 7.5.1
• 7.5.2
• 7.5.2a
• 7.5.2b
• 7.5.3
• 7.5.4
• 7.5.5
• 7.5.5a
• 7.5.5b
• 7.5.6
• 7.5.6(XU)
• 7.5.6a
• 7.5.6c
• 7.5.7
• 7.5.7s
• 7.6.0
• 7.6.1
• 7.6.2
• 7.6.2SR1
• 7.6.2SR2
• 7.6.2SR3
• 7.6.2SR4
• 7.6.2SR5
• 7.6.2SR6
• 7.6.2SR7

License

• commercial

Website

• Vendor: https://www.cisco.com/

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