Actiontec WCB6200Q 1.2L.03.5 HTTP Server uh_tcp_recv_content buffer overflow

Summaryinfo

A vulnerability categorized as critical has been discovered in Actiontec WCB6200Q 1.2L.03.5. This vulnerability affects the function uh_tcp_recv_content of the component HTTP Server. The manipulation results in buffer overflow. This vulnerability is known as CVE-2024-6142. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as very critical has been found in Actiontec WCB6200Q 1.2L.03.5. Affected is the function uh_tcp_recv_content of the component HTTP Server. 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:

Actiontec WCB6200Q uh_tcp_recv_content Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Actiontec WCB6200Q routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP server. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the HTTP server. Was ZDI-CAN-21410.

The advisory is shared for download at zerodayinitiative.com. This vulnerability is traded as CVE-2024-6142 since 06/18/2024. 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 known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/19/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Actiontec

Name

• WCB6200Q

Version

• 1.2L.03.5

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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