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https://github.com/ntop/ndpi

Open Source Deep Packet Inspection Software Toolkit
https://github.com/ntop/ndpi

cybersecurity deep-packet-inspection dpi ndpi network traffic-analysis

Last synced: 3 days ago
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Open Source Deep Packet Inspection Software Toolkit

Host: GitHub
URL: https://github.com/ntop/ndpi
Owner: ntop
License: lgpl-3.0
Created: 2015-04-19T04:56:52.000Z (over 9 years ago)
Default Branch: dev
Last Pushed: 2024-11-22T17:22:32.000Z (21 days ago)
Last Synced: 2024-11-24T19:30:02.823Z (19 days ago)
Topics: cybersecurity, deep-packet-inspection, dpi, ndpi, network, traffic-analysis
Language: C
Homepage: http://www.ntop.org
Size: 224 MB
Stars: 3,857
Watchers: 155
Forks: 898
Open Issues: 81
Metadata Files:
- Readme: README.fuzzer.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: COPYING

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README

        ## Compiling nDPI with Fuzzer

- Install the latest clang (sudo apt-get install clang-18)

- Export environamental variables to prefer clang over g++ (of installed)

  - export CC=/usr/bin/clang-18

  - export CPP=/usr/bin/clang-cpp-18

  - export CXX=/usr/bin/clang++-18

  - export LD=/usr/bin/ld.lld-18

- Run autogen.sh

  - ./autogen.sh --with-sanitizer --enable-fuzztargets 

## Testing nDPI with ClusterFuzz Artifacts

- Download the artifact (example clusterfuzz-testcase-fuzz_process_packet-4992218834796544)

- Run nDPI against the artifact

  - Example: ./fuzz/fuzz_process_packet clusterfuzz-testcase-fuzz_process_packet-4992218834796544 

The output is the error report

```

  ./fuzz/fuzz_process_packet /tmp/clusterfuzz-testcase-fuzz_process_packet-4992218834796544 

  AddressSanitizer:DEADLYSIGNAL

  =================================================================

  ==11590==ERROR: AddressSanitizer: SEGV on unknown address 0x61a100000087 (pc 0x00000056e6a4 bp 0x7ffd624fa170 sp 0x7ffd624fa090 T0)

  ==11590==The signal is caused by a READ memory access.

      #0 0x56e6a4 in quic_len /home/deri/nDPI/src/lib/protocols/quic.c:203:12

      #1 0x575d6b in decrypt_initial_packet /home/deri/nDPI/src/lib/protocols/quic.c:993:16

      #2 0x571776 in get_clear_payload /home/deri/nDPI/src/lib/protocols/quic.c:1302:21

      #3 0x56f149 in ndpi_search_quic /home/deri/nDPI/src/lib/protocols/quic.c:1658:19

      #4 0x503935 in check_ndpi_detection_func /home/deri/nDPI/src/lib/ndpi_main.c:4683:6

      #5 0x5056fb in check_ndpi_udp_flow_func /home/deri/nDPI/src/lib/ndpi_main.c:4742:10

      #6 0x505152 in ndpi_check_flow_func /home/deri/nDPI/src/lib/ndpi_main.c:4775:12

      #7 0x5174cf in ndpi_detection_process_packet /home/deri/nDPI/src/lib/ndpi_main.c:5545:15

      #8 0x4c709b in LLVMFuzzerTestOneInput /home/deri/nDPI/fuzz/fuzz_process_packet.c:30:3

      #9 0x4c7640 in main /home/deri/nDPI/fuzz/fuzz_process_packet.c:90:17

      #10 0x7f888e5dabf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310

      #11 0x41c399 in _start (/home/deri/nDPI/fuzz/fuzz_process_packet+0x41c399)

  AddressSanitizer can not provide additional info.

  SUMMARY: AddressSanitizer: SEGV /home/deri/nDPI/src/lib/protocols/quic.c:203:12 in quic_len

  ==11590==ABORTING

```