جزئیات آسیب‌پذیری

nDPI 5.1.0 contains a memory access issue in the DNS dissector and serializer deserialization code. Specially crafted network input can cause byte-buffer addresses at odd offsets to be cast to uint16_t or wider integer pointers and directly dereferenced without alignment checks. This results in undefined behavior and can cause process termination in UBSan-instrumented builds or on strict-alignment architectures, leading to denial of service.

• https://github.com/utoni/nDPI/commit/6ce1280c52ed52a97332c3fe58fd2b47b867ec6e
• https://github.com/utoni/nDPI/commit/8fc3b439920021a77165f8aee4f81b25bc88629e
• https://github.com/utoni/nDPI/commit/694231bb43ff21f452fbc2b53fcf6cdc9a99f75f
• https://github.com/utoni/nDPI/commit/6698f14bf6025394a537fe23f413cf79e9d13594
• https://github.com/ntop/nDPI/pull/3231
• https://github.com/ntop/nDPI/issues/3213