Cisco Small Business IP Phones up to 7.6.2SR7 Web-based Management Interface buffer overflow

Summaryinfo

A vulnerability classified as critical has been found in Cisco Small Business IP Phones. This impacts an unknown function of the component Web-based Management Interface. Performing a manipulation results in buffer overflow. This vulnerability is cataloged as CVE-2024-20450. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Cisco Small Business IP Phones. This affects some unknown processing 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. The summary by CVE is:

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 at sec.cloudapps.cisco.com. This vulnerability is uniquely identified as CVE-2024-20450 since 11/08/2023. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/24/2024).

Upgrading eliminates this vulnerability.

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Productinfo

Type

• IP Phone Software

Vendor

• Cisco

Name

• Small Business IP Phones

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/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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