| 标题 | Tenda W20E Enterprise Router V15.11.0.6 Stack-based Buffer Overflow |
|---|
| 描述 | A stack-based buffer overflow vulnerability has been identified in the web management interface of the Tenda W20E enterprise router. An attacker can trigger this vulnerability by sending a maliciously crafted, overly long string within the gotoUrl parameter to the /goform/PortalAuth endpoint. Successful exploitation can result in a service crash (DoS) or Remote Code Execution (RCE) with root privileges.
Under certain conditions , the function attempts to retrieve a user-provided fallback URL using websGetVar(wp, "gotoUrl", ...). The retrieved value is then copied into the redirect_url buffer using the unsafe strcpy function:
Since there is no length validation on the gotoUrl input, an attacker can provide a string significantly longer than 256 bytes. This will overflow the stack buffer, overwriting the saved Link Register (LR/Return Address) and allowing the attacker to hijack the program's control flow. |
|---|
| 来源 | ⚠️ https://github.com/Robots10/IoT_vlu/blob/main/reports/Tenda/formPortalAuth/formPortalAuth.md |
|---|
| 用户 | hacker128 (UID 93883) |
|---|
| 提交 | 2026-05-24 17時27分 (18 日前) |
|---|
| 管理 | 2026-06-07 18時06分 (14 days later) |
|---|
| 状态 | 已接受 |
|---|
| VulDB条目 | 369143 [Tenda W20E 15.11.0.6 Web Management Interface /goform/PortalAuth formPortalAuth gotoUrl 内存损坏] |
|---|
| 积分 | 20 |
|---|