Commit graph

6 commits

Author SHA1 Message Date
Ivan Nardi
43f7dc9ba0
fuzz: extend fuzzing coverage (#2626) 2024-11-20 13:36:41 +01:00
Ivan Nardi
26cc1f131f
fuzz: improve fuzzing coverage (#2474)
Remove some code never triggered

AFP: the removed check is included in the following one
MQTT: fix flags extraction
2024-06-17 13:45:47 +02:00
Ivan Nardi
3edfad01a1
fuzz: extend fuzzing coverage (#2052)
Added/merged some traces.
Improved Socks identification
2023-07-18 07:41:56 +02:00
Ivan Nardi
4075324e2b
fuzz: extend fuzz coverage (#1888) 2023-02-16 18:04:34 +01:00
Ivan Nardi
b51a2ac72a
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.
2023-02-09 20:02:12 +01:00
Ivan Nardi
6d00a9e0bd
fuzz: add a new fuzzer to test serialization/deserialization code (#1876)
Autodetecting the needed buffer size is quite complex (especially with
float/double values) so it is mandatory to properly check for
`ndpi_snprintf` truncation.
These issues have been undetected so far probably because the default
buffer is big enough for all common cases.

Add an example of usage of `ndpi_deserialize_clone_all()` (taken from
`ntopng`)
2023-01-27 07:09:18 +01:00