CVSS 8.0 · High EPSS 0,41%
Kerentanan Integer Underflow (Wrap or Wraparound) pada espressif esp-idf. Skor CVSS 3.1 8.0 (High) menurut NVD.
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.2, 5.4.3, 5.3.4, 5.2.6, and 5.1.6, a vulnerability exists in the WPS (Wi-Fi Protected Setup) Enrollee implementation where malformed EAP-WSC packets with truncated payloads can cause integer underflow during fragment length calculation. When processing EAP-Expanded (WSC) messages, the code computes frag_len by subtracting header sizes from the total packet length. If an attacker sends a packet where the EAP Length field covers only the header and flags but omits the expected payload (such as the 2-byte Message Length field when WPS_MSG_FLAG_LEN is set), frag_len becomes negative. This negative value is then implicitly cast to size_t when passed to wpabuf_put_data(), resulting in a very large unsigned value. This issue has been patched in versions 5.5.3, 5.4.4, 5.3.5, 5.2.7, and 5.1.7.
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| espressif | esp-idf | Versi 5.1.6 |
| espressif | esp-idf | Versi 5.2.6 |
| espressif | esp-idf | Versi 5.3.4 |
| espressif | esp-idf | Versi 5.4.3 |
| espressif | esp-idf | Versi 5.5.2 |