| शीर्षक | Tenda TX9 V22.03.02.18 Stack-based Buffer Overflow |
|---|
| विवरण | During a security review of the Tenda TX9 router firmware (version V22.03.02.18), a critical stack-based buffer overflow vulnerability was identified in the MAC filtering configuration endpoint /goform/setMacFilterCfg.
The vulnerability resides in the sub_423B50 function (responsible for parsing MAC filter rules). This function is triggered when a user submits a configuration request via the deviceList parameter. The function uses strchr to locate a carriage return character (\r, ASCII 13) within the user-provided string. Once found, it employs the unsafe strcpy function to copy the split substrings into a fixed-size stack buffer v15 (160 bytes). Since the length of the input strings is not validated before the copy operation, an attacker can provide a specially crafted long string to overwrite the stack frame, including the return address, leading to a Denial of Service (DoS) or potential Remote Code Execution (RCE). |
|---|
| स्रोत | ⚠️ https://github.com/LX-66-LX/cve-new/issues/9 |
|---|
| उपयोगकर्ता | LX-66-LX (UID 92717) |
|---|
| सबमिशन | 31/01/2026 01:41 PM (8 महीनों पहले) |
|---|
| संयम | 07/02/2026 06:20 PM (7 days later) |
|---|
| स्थिति | प्रतिलिपि |
|---|
| VulDB प्रविष्टि | 344775 [Tenda TX9 तक 22.03.02.10_multi /goform/setMacFilterCfg sub_4223E0 deviceList बफ़र ओवरफ़्लो] |
|---|
| अंक | 0 |
|---|