Totolink AC1200 3.0.0-B20230809.1615 HTTP Request boa formMultiAP vwlan_idx stack-based overflow

Summaryinfo

A vulnerability classified as critical was found in Totolink AC1200 3.0.0-B20230809.1615. This affects the function formMultiAP of the file boa of the component HTTP Request Handler. Such manipulation of the argument vwlan_idx leads to stack-based overflow. This vulnerability is documented as CVE-2024-34196. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Totolink AC1200 3.0.0-B20230809.1615 and classified as critical. Affected by this issue is the function formMultiAP of the file boa of the component HTTP Request Handler. The manipulation of the argument vwlan_idx with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

Totolink AC1200 Wireless Dual Band Gigabit Router A3002RU_V3 Firmware V3.0.0-B20230809.1615 is vulnerable to Buffer Overflow. The "boa" program allows attackers to modify the value of the "vwlan_idx" field via "formMultiAP". This can lead to a stack overflow through the "formWlEncrypt" CGI function by constructing malicious HTTP requests and passing a WLAN SSID value exceeding the expected length, potentially resulting in command execution or denial of service attacks.

The advisory is available at gist.github.com. This vulnerability is handled as CVE-2024-34196 since 05/02/2024. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/18/2025).

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

• Totolink

Name

• AC1200

Version

• 3.0.0-B20230809.1615

License

• commercial

Website

• Vendor: https://www.totolink.net/

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