| Titolo | TRENDnet TEW-635BRM V1.00.03 Stack-based Buffer Overflow |
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| Descrizione | The /sbin/rc binary of the TRENDnet TEW-635BRM router contains a stack buffer overflow vulnerability in the start_httpd function. The function retrieves the NVRAM variable device_name via nvram_scm_safe_get() and copies it directly into a fixed-size stack buffer using strcpy() — with no length validation whatsoever. Because the start of this buffer sits only 136 bytes below the saved return address ($ra), any device_name value longer than 136 bytes overwrites $ra, causing start_httpd to crash and preventing the web service (mini_httpd) from starting. A precisely crafted payload can hijack the control flow and achieve remote code execution (RCE). |
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| Fonte | ⚠️ https://github.com/glkfc/IoT-Vulnerability/blob/main/TRENDnet/TRENDnet_TEW635BRM_device_name_BOF_EN.md |
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| Utente | jfkk (UID 79868) |
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| Sottomissione | 27/05/2026 05:35 (2 mesi fa) |
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| Moderazione | 11/07/2026 12:02 (2 months later) |
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| Stato | Accettato |
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| Voce VulDB | 377787 [Trendnet TEW-635BRM fino a 1.00.03 Web Service /sbin/rc start_httpd device_name buffer overflow] |
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| Punti | 20 |
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