From b51a2ac72a3cbd1b470890d0151a46da28e6754e Mon Sep 17 00:00:00 2001 From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com> Date: Thu, 9 Feb 2023 20:02:12 +0100 Subject: fuzz: some improvements and add two new fuzzers (#1881) Remove `FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION` define from `fuzz/Makefile.am`; it is already included by the main configure script (when fuzzing). Add a knob to force disabling of AESNI optimizations: this way we can fuzz also no-aesni crypto code. Move CRC32 algorithm into the library. Add some fake traces to extend fuzzing coverage. Note that these traces are hand-made (via scapy/curl) and must not be used as "proof" that the dissectors are really able to identify this kind of traffic. Some small updates to some dissectors: CSGO: remove a wrong rule (never triggered, BTW). Any UDP packet starting with "VS01" will be classified as STEAM (see steam.c around line 111). Googling it, it seems right so. XBOX: XBOX only analyses UDP flows while HTTP only TCP ones; therefore that condition is false. RTP, STUN: removed useless "break"s Zattoo: `flow->zattoo_stage` is never set to any values greater or equal to 5, so these checks are never true. PPStream: `flow->l4.udp.ppstream_stage` is never read. Delete it. TeamSpeak: we check for `flow->packet_counter == 3` just above, so the following check `flow->packet_counter >= 3` is always false. --- .../54a1f0e11a61f82bfc474938c0d9109e263d918c | Bin 141 -> 0 bytes 1 file changed, 0 insertions(+), 0 deletions(-) delete mode 100644 fuzz/corpus/fuzz_serialization/54a1f0e11a61f82bfc474938c0d9109e263d918c (limited to 'fuzz/corpus/fuzz_serialization/54a1f0e11a61f82bfc474938c0d9109e263d918c') diff --git a/fuzz/corpus/fuzz_serialization/54a1f0e11a61f82bfc474938c0d9109e263d918c b/fuzz/corpus/fuzz_serialization/54a1f0e11a61f82bfc474938c0d9109e263d918c deleted file mode 100644 index 01acfc37d..000000000 Binary files a/fuzz/corpus/fuzz_serialization/54a1f0e11a61f82bfc474938c0d9109e263d918c and /dev/null differ -- cgit v1.2.3