CVE-2024-36650: a3100r Buffer Overflow — Exploit

Description

TOTOLINK AC1200 Wireless Dual Band Gigabit Router firmware A3100R V4.1.2cu.5247_B20211129, in the cgi function `setNoticeCfg` of the file `/lib/cste_modules/system.so`, the length of the user input string `NoticeUrl` is not checked. This can lead to a buffer overflow, allowing attackers to construct malicious HTTP or MQTT requests to cause a denial-of-service attack.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-120 CWE-120

Affected Products

Vendor	Product	Versions
totolink	a3100r_firmware	All
totolink	a3100r	All

References

Exploits

https://gist.github.com/Swind1er/f442fcac520a48c05c744c7b72362483 https://gist.github.com/Swind1er/f442fcac520a48c05c744c7b72362483

Frequently Asked Questions

What is CVE-2024-36650? +

TOTOLINK AC1200 Wireless Dual Band Gigabit Router firmware A3100R V4.1.2cu.5247_B20211129, in the cgi function `setNoticeCfg` of the file `/lib/cste_modules/system.so`, the length of the user input string `NoticeUrl` is not checked. This can lead to a buffer overflow, allowing attackers to construct malicious HTTP or MQTT requests to cause a denial-of-service attack. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-36650? +

CVE-2024-36650 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-36650? +

CVE-2024-36650 affects products from totolink, specifically: a3100r, a3100r_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-36650? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2024-36650