TLS: fix use-of-uninitialized-value error #1573
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Proper fix for the error already reported in 9040bc7 ``` Uninitialized bytes in __interceptor_strlen at offset 3 inside [0x7ffc7a147390, 4) ==111876==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x55e3e4f32e5b in ndpi_strdup /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:268:13 ntop#1 0x55e3e4ef7391 in ndpi_set_risk /home/ivan/svnrepos/nDPI/src/lib/ndpi_utils.c:2254:12 ntop#2 0x55e3e5022fdf in processClientServerHello /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1523:8 ntop#3 0x55e3e503af44 in processTLSBlock /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:865:5 ntop#4 0x55e3e50397cd in ndpi_search_tls_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1024:2 ntop#5 0x55e3e503570c in ndpi_search_tls_wrapper /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2453:5 ntop#6 0x55e3e4f84a6a in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5150:6 ntop#7 0x55e3e4f85778 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5198:12 ntop#8 0x55e3e4f851e1 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5217:12 ntop#9 0x55e3e4f96c7a in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6076:15 ntop#10 0x55e3e4ed91ef in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#11 0x55e3e4eda27e in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#12 0x7f5cb3146082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#13 0x55e3e4e5140d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0xa340d) (BuildId: 0c02c433e039970dd13a60382b94dd5a8e19f625) ```
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utoni
approved these changes
Jun 1, 2022
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Proper fix for the error already reported in 9040bc7