TOTOLINK AC1200 A3002RU 2.1.1-B20230720.1011 CGI formWlEncrypt wlan_ssid buffer overflow

Summaryinfo

A vulnerability labeled as critical has been found in TOTOLINK AC1200 A3002RU 2.1.1-B20230720.1011. Impacted is the function formWlEncrypt of the component CGI Handler. The manipulation of the argument wlan_ssid results in buffer overflow. This vulnerability is identified as CVE-2024-34198. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in TOTOLINK AC1200 A3002RU 2.1.1-B20230720.1011. Affected is the function formWlEncrypt of the component CGI Handler. The manipulation of the argument wlan_ssid 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:

TOTOLINK AC1200 Wireless Router A3002RU V2.1.1-B20230720.1011 is vulnerable to Buffer Overflow. The formWlEncrypt CGI handler in the boa program fails to limit the length of the wlan_ssid field from user input. This allows attackers to craft malicious HTTP requests by supplying an excessively long value for the wlan_ssid field, leading to a stack overflow. This can be further exploited to execute arbitrary commands or launch denial-of-service attacks.

The advisory is available at gist.github.com. This vulnerability is traded as CVE-2024-34198 since 05/02/2024. The exploitability is told to be easy. It is possible to launch the attack 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 08/29/2024).

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

• TOTOLINK

Name

• AC1200 A3002RU

Version

• 2.1.1-B20230720.1011

License

• commercial

Website

• Vendor: https://www.totolink.net/

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