| Titel | Tenda A18pro V02.03.02.28 Stack-based Buffer Overflow |
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| Beschreibung | During a security review of the Tenda A18pro router firmware (version V02.03.02.28), a critical stack-based buffer overflow vulnerability was identified in the QoS (Quality of Service) configuration endpoint /goform/formSetQosBand.
The vulnerability is located in the set_qosMib_list function, which is called by the request handler formSetQosBand. The function receives a user-controlled list parameter. It searches for a delimiter and then uses the unsafe strcpy function to copy the contents of the list into a fixed-size stack buffer qos_str (256 bytes). Since the input length is not validated, an attacker can overwrite the stack frame, leading to a Denial of Service (DoS) or arbitrary code execution. |
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| Quelle | ⚠️ https://github.com/lilukun337/cve/issues/4 |
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| Benutzer | lilukun (UID 96162) |
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| Einreichung | 06.03.2026 07:14 (vor 5 Monaten) |
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| Moderieren | 20.03.2026 09:33 (14 days later) |
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| Status | Akzeptiert |
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| VulDB Eintrag | 352018 [Tenda A18 Pro 02.03.02.28 /goform/formSetQosBand set_qosMib_list Pufferüberlauf] |
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| Punkte | 20 |
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