Cisco Small Business RV110W Request buffer overflow

Summaryinfo

A vulnerability has been found in Cisco Small Business RV110W, Small Business RV130, Small Business RV130W and Small Business RV215W and classified as critical. This affects an unknown function of the component Request Handler. The manipulation leads to buffer overflow. This vulnerability is documented as CVE-2022-20873. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cisco Small Business RV110W, Small Business RV130, Small Business RV130W and Small Business RV215W (the affected version unknown). It has been rated as critical. This issue affects an unknown part of the component Request Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an authenticated, remote attacker to execute arbitrary code on an affected device or cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient validation of user fields within incoming HTTP packets. An attacker could exploit these vulnerabilities by sending a crafted request to the web-based management interface. A successful exploit could allow the attacker to execute arbitrary commands on an affected device with root-level privileges or to cause the device to restart unexpectedly, resulting in a DoS condition. To exploit these vulnerabilities, an attacker would need to have valid Administrator credentials on the affected device. Cisco has not released software updates that address these vulnerabilities.

The weakness was released 07/21/2022 as cisco-sa-sb-rv-rce-overflow-ygHByAK. The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2022-20873 since 11/02/2021. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

• Cisco

Name

• Small Business RV110W
• Small Business RV130
• Small Business RV130W
• Small Business RV215W

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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