Submit #585687: TP-LINK TECHNOLOGIES Co., Ltd. TL-WR841ND Wireless Router V11_150616 Buffer Overflow

ping_addr parameter does not validate the length of user input. The input is directly passed to the ipAddrDispose() function, which uses a fixed-size buffer (51 bytes) without restricting input length. This leads to a buffer overflow during cyclic writes, overwriting stack memory. An attacker can trigger the overflow by crafting a long string (e.g., "A"*2000), overwriting return addresses or function pointers, resulting in:

Denial of Service (DoS): The web service process crashes, rendering the management interface inaccessible.
Potential Remote Code Execution (RCE): By controlling the stack layout, an attacker may hijack the program execution flow (requires bypassing ASLR/NX protections).

• Source: ⚠️ https://github.com/alc9700jmo/CVE/issues/12
• User: alc9700 (UID 79368)
• Submission: 05/28/2025 02:54 (1 Year ago)
• Moderation: 05/29/2025 09:27 (1 day later)
• Status: Duplicate
• VulDB entry: 203893 [TP-LINK TL-WR841N 3.16.9 httpd buffer overflow]
• Points: 0