Od 27 marca 2025 r. zalecamy używanie android-latest-release zamiast aosp-main do kompilowania i wspołtworzenia AOSP. Więcej informacji znajdziesz w artykule o zmianach w AOSP.
Włączanie fuzzerów na urządzeniach z AAOS
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Testowanie losowe jest powszechnie stosowane przez programistów C++, którzy chcą znajdować błędy związane z bezpieczeństwem.
Na tej stronie opisujemy kategorie fuzzerów AAOS (Android Automotive OS) oraz sposób ich uruchamiania na urządzeniach docelowych z AAOS.
Istniejące fuzzery AAOS
Tworzenie fuzzerów na celach AAOS przebiega w ten sam sposób co na platformie Android. Instrukcje dotyczące konfigurowania i tworzenia fuzzingu znajdziesz na stronie Fuzzing za pomocą narzędzia libFuzzer.
Ścieżka wykonania celu testu podatności na AAOS różni się jednak od tej na telefonach z Androidem. Dlatego konieczne jest uruchomienie określonych narzędzi fuzzer na urządzeniach z AAOS, aby upewnić się, że nie ma żadnych problemów z bezpieczeństwem.
W przypadku AAOS fuzzery są podzielone na te kategorie:
Lista fuzzerów AAOS:
| Generatory danych fuzzingowych EVS |
Sprawdzające narzędzia Computepipe |
Inne narzędzia fuzzingowe |
evs_halcamera_fuzzer |
computepipe _semantic_manager_fuzzer |
sbcdecoder_fuzzer |
evs_virtual_camera_fuzzer |
computepipe _pixel_mem_handle_fuzzer |
|
evs_haldisplay_fuzzer |
computepipe _pixel_stream_manager_fuzzer |
|
evs_enumerator_fuzzer |
grpc_graph_fuzzer |
|
|
local _prebuild_graph_fuzzer |
|
Kompilowanie fuzzera AAOS
Zalecamy użycie urządzenia HWASAN do uruchamiania fuzzerów. Jeśli jednak nie używasz urządzenia HWASAN, wykonaj te czynności, aby skompilować i zaflashować obraz HWASAN lokalnie:
Aby skompilować wersję hwasan i wgrać ją do systemu samochodowego, uruchom te polecenia.
source build/envsetup.sh
lunch <car target>
SANITIZE_TARGET=hwaddress m
fastboot flashall # this will automatically flash the local built image to device
Zbuduj fuzzer dla menedżera EVS:
mmma packages/services/Car/cpp/evs/manager/1.1/test/fuzzer/
Uruchamianie fuzzera AAOS
Po skonfigurowaniu fuzzera wykonaj te czynności:
Aby przygotować synchronizowanie fuzzerów z systemem AAOS, uruchom te polecenia:
adb root;
adb remount;
adb reboot;
adb root;
adb remount
Jeśli na urządzeniu nie ma folderu o nazwie /data/fuzzer, utwórz go.
Przejdź do folderu, w którym pobierano i rozpakowywano kompilację, a następnie uruchom to polecenie, aby przesłać fuzzer na urządzenie.
adb sync data
Aby przesłać test na urządzenie, wykonaj te czynności:
adb push testcase /data/fuzzer/testcase
Uruchom fuzzer za pomocą tego polecenia:
adb shell /data/fuzzer/evs_fuzzer /data/fuzzer/testcase
Sprawdź dane wyjściowe.
Pomyślne uruchomienie powoduje wyświetlenie danych wyjściowych podobnych do tych:
INFO: Seed: 1902496153
INFO: Loaded 4 modules (31463 inline 8-bit counters): 15646 [0x7afd3ddb80, 0x7afd3e189e), 15784 [0x7afd7fbbf0, 0x7afd7ff998), 27 [0x7afd618328, 0x7afd618343), 6 [0x63e95aece8, 0x63e95aecee),
INFO: Loaded 4 PC tables (31463 PCs): 15646 [0x7afd3e18a0,0x7afd41ea80), 15784 [0x7afd7ff998,0x7afd83d418), 27 [0x7afd618348,0x7afd6184f8), 6 [0x63e95aecf0,0x63e95aed50),
INFO: 0 files found in /data/fuzz/bot/inputs/fuzzer-testcases-disk/temp-671/new
INFO: 54 files found in /data/fuzz/bot/inputs/data-bundles/android_auto_libcrypto_utils_fuzzer
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 1048576 bytes
INFO: seed corpus: files: 54 min: 1b max: 4194301b total: 6336542b rss: 28Mb
#55 INITED cov: 71 ft: 94 corp: 6/1032Kb exec/s: 0 rss: 33Mb
#79 REDUCE cov: 71 ft: 94 corp: 6/1019Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 1036131/1036131 MS: 4 CMP-ChangeASCIIInt-CopyPart-EraseBytes- DE: "\x00\x00\x00\x00"-
#83 REDUCE cov: 71 ft: 94 corp: 6/686Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 694616/694616 MS: 4 ChangeASCIIInt-ChangeASCIIInt-ChangeBinInt-CrossOver-
#104 REDUCE cov: 71 ft: 94 corp: 6/591Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 597426/597426 MS: 1 EraseBytes-
#192 REDUCE cov: 71 ft: 94 corp: 6/499Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 503742/503742 MS: 3 PersAutoDict-ChangeByte-EraseBytes- DE: "\x00\x00\x00\x00"-
#219 REDUCE cov: 71 ft: 94 corp: 6/292Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 290962/290962 MS: 2 CopyPart-EraseBytes-
#241 REDUCE cov: 71 ft: 94 corp: 6/226Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 223787/223787 MS: 2 CopyPart-EraseBytes-
#269 REDUCE cov: 71 ft: 94 corp: 6/152Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 148467/148467 MS: 3 InsertRepeatedBytes-PersAutoDict-EraseBytes- DE: "\x00\x00\x00\x00"-
#300 REDUCE cov: 71 ft: 94 corp: 6/83Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 77320/77320 MS: 1 EraseBytes-
#393 REDUCE cov: 71 ft: 94 cor`p: 6/80Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 73802/73802 MS: 3 InsertRepeatedBytes-P
Awaria lub nieudane uruchomienie generuje dane wyjściowe podobne do tych:
HWAddressSanitizer: tag-mismatch on address 0x0075e8a643d0 at pc
0x0075e8a5d988 WRITE of size 8 at 0x0075e8a643d0 tags: 5c/00 (ptr/mem) in
thread T0 #0 0x75e8a5d984 (/system/lib64/libnetd_client.so+0x3984) #1
0x75da484788 (/data/fuzzer/lib/libc.so+0x49788) #2 0x75da52dae8
……
00000075e8a5d988 SUMMARY: HWAddressSanitizer: tag-mismatch
(/system/lib64/libnetd_client.so+0x3984)
Informacje o wykrytych lukach w zabezpieczeniach znajdziesz na stronie CVE.
Treść strony i umieszczone na niej fragmenty kodu podlegają licencjom opisanym w Licencji na treści. Java i OpenJDK są znakami towarowymi lub zastrzeżonymi znakami towarowymi należącymi do firmy Oracle lub jej podmiotów stowarzyszonych.
Ostatnia aktualizacja: 2025-06-26 UTC.
[[["Łatwo zrozumieć","easyToUnderstand","thumb-up"],["Rozwiązało to mój problem","solvedMyProblem","thumb-up"],["Inne","otherUp","thumb-up"]],[["Brak potrzebnych mi informacji","missingTheInformationINeed","thumb-down"],["Zbyt skomplikowane / zbyt wiele czynności do wykonania","tooComplicatedTooManySteps","thumb-down"],["Nieaktualne treści","outOfDate","thumb-down"],["Problem z tłumaczeniem","translationIssue","thumb-down"],["Problem z przykładami/kodem","samplesCodeIssue","thumb-down"],["Inne","otherDown","thumb-down"]],["Ostatnia aktualizacja: 2025-06-26 UTC."],[],[],null,["# Enable fuzzers on AAOS devices\n\nA fuzz test is widely adopted by C++ developers to find security-related bugs.\nThis page describes the categories of AAOS (Android Automotive OS) fuzzers and\nhow to run them on AAOS-specific target devices.\n\nExisting AAOS fuzzers\n---------------------\n\nCreate fuzzers on AAOS targets the same way that you would on an Android\nPlatform. See fuzzing setup and build instructions on the [Fuzzing with\n`libFuzzer`](/docs/security/test/libfuzzer) page.\n\nHowever, the execution path of the fuzz target on AAOS is different from that on\nAndroid phone devices. Hence, it is necessary to run specific fuzzers on AAOS\ndevices to ensure that there are no security issues.\n\nAAOS specific fuzzers are divided into the following categories:\n\n- External View System (EVS) fuzzers: to fuzz the external camera management\n system. See [sample code for EVS\n fuzzers](https://cs.android.com/android/platform/superproject/+/android-latest-release:packages/services/Car/cpp/evs/manager/1.1/test/fuzzer/)\n for more details.\n\n- Computepipe fuzzers: to fuzz machine learning computepipe systems. See\n [sample code for Computepipe fuzzers](https://cs.android.com/android/platform/superproject/+/android-latest-release:packages/services/Car/cpp/computepipe/tests/fuzz/)\n for more details.\n\n- Other fuzzers: to fuzz AAOS libraries. See [sample code for the sbcdecoder\n fuzzer](https://cs.android.com/android/platform/superproject/+/android-latest-release:packages/modules/Bluetooth/system/embdrv/sbc/decoder/sbcdecoder_fuzzer.c?q=sbcdecoder_fuzzer.c)\n for more details.\n\nSee the following table for a list of AAOS specific fuzzers:\n\n| EVS fuzzers | Computepipe fuzzers | Other fuzzers |\n|-----------------------------|--------------------------------------------|---------------------|\n| `evs_halcamera_fuzzer` | `computepipe _semantic_manager_fuzzer` | `sbcdecoder_fuzzer` |\n| `evs_virtual_camera_fuzzer` | `computepipe _pixel_mem_handle_fuzzer` | |\n| `evs_haldisplay_fuzzer` | `computepipe _pixel_stream_manager_fuzzer` | |\n| `evs_enumerator_fuzzer` | `grpc_graph_fuzzer` | |\n| | `local _prebuild_graph_fuzzer` | |\n\nCompile an AAOS fuzzer\n----------------------\n\nWe recommend using a [HWASAN](/docs/security/test/hwasan) device for running\nfuzzers. However, when not using a HWASAN device, follow these steps to compile\nand flash a HWASAN image locally:\n\n1. Run the following commands to compile the `hwasan` build and flash the build\n to the car system.\n\n source build/envsetup.sh\n lunch \u003ccar target\u003e\n SANITIZE_TARGET=hwaddress m\n fastboot flashall # this will automatically flash the local built image to device\n\n2. Compile the fuzzer for EVS manager:\n\n mmma packages/services/Car/cpp/evs/manager/1.1/test/fuzzer/\n\nRun an AAOS fuzzer\n------------------\n\nOnce configured, follow these steps to run a fuzzer:\n\n1. Run the following commands to prepare syncing fuzzers to the AAOS system:\n\n adb root;\n adb remount;\n adb reboot;\n adb root;\n adb remount\n\n2. If you don't have a folder named /data/fuzzer on your device, create one.\n\n3. Go to where you downloaded and unzipped the build, and from there, run the\n following command to push the fuzzer on the device.\n\n adb sync data\n\n4. To push the testcase on the device, run the following:\n\n adb push testcase /data/fuzzer/testcase\n\n5. Run the fuzzer with the following command:\n\n adb shell /data/fuzzer/evs_fuzzer /data/fuzzer/testcase\n\n6. Verify the output.\n\n A successful run generates output similar to the following example: \n\n INFO: Seed: 1902496153\n INFO: Loaded 4 modules (31463 inline 8-bit counters): 15646 [0x7afd3ddb80, 0x7afd3e189e), 15784 [0x7afd7fbbf0, 0x7afd7ff998), 27 [0x7afd618328, 0x7afd618343), 6 [0x63e95aece8, 0x63e95aecee),\n INFO: Loaded 4 PC tables (31463 PCs): 15646 [0x7afd3e18a0,0x7afd41ea80), 15784 [0x7afd7ff998,0x7afd83d418), 27 [0x7afd618348,0x7afd6184f8), 6 [0x63e95aecf0,0x63e95aed50),\n INFO: 0 files found in /data/fuzz/bot/inputs/fuzzer-testcases-disk/temp-671/new\n INFO: 54 files found in /data/fuzz/bot/inputs/data-bundles/android_auto_libcrypto_utils_fuzzer\n INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 1048576 bytes\n INFO: seed corpus: files: 54 min: 1b max: 4194301b total: 6336542b rss: 28Mb\n #55 INITED cov: 71 ft: 94 corp: 6/1032Kb exec/s: 0 rss: 33Mb\n #79 REDUCE cov: 71 ft: 94 corp: 6/1019Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 1036131/1036131 MS: 4 CMP-ChangeASCIIInt-CopyPart-EraseBytes- DE: \"\\x00\\x00\\x00\\x00\"-\n #83 REDUCE cov: 71 ft: 94 corp: 6/686Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 694616/694616 MS: 4 ChangeASCIIInt-ChangeASCIIInt-ChangeBinInt-CrossOver-\n #104 REDUCE cov: 71 ft: 94 corp: 6/591Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 597426/597426 MS: 1 EraseBytes-\n #192 REDUCE cov: 71 ft: 94 corp: 6/499Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 503742/503742 MS: 3 PersAutoDict-ChangeByte-EraseBytes- DE: \"\\x00\\x00\\x00\\x00\"-\n #219 REDUCE cov: 71 ft: 94 corp: 6/292Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 290962/290962 MS: 2 CopyPart-EraseBytes-\n #241 REDUCE cov: 71 ft: 94 corp: 6/226Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 223787/223787 MS: 2 CopyPart-EraseBytes-\n #269 REDUCE cov: 71 ft: 94 corp: 6/152Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 148467/148467 MS: 3 InsertRepeatedBytes-PersAutoDict-EraseBytes- DE: \"\\x00\\x00\\x00\\x00\"-\n #300 REDUCE cov: 71 ft: 94 corp: 6/83Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 77320/77320 MS: 1 EraseBytes-\n #393 REDUCE cov: 71 ft: 94 cor`p: 6/80Kb lim: 1048576 exec/s: 0 rss: 33Mb L: 73802/73802 MS: 3 InsertRepeatedBytes-P\n\n A crash or a failed run generates an output similar to the following\n example: \n\n HWAddressSanitizer: tag-mismatch on address 0x0075e8a643d0 at pc\n 0x0075e8a5d988 WRITE of size 8 at 0x0075e8a643d0 tags: 5c/00 (ptr/mem) in\n thread T0 #0 0x75e8a5d984 (/system/lib64/libnetd_client.so+0x3984) #1\n 0x75da484788 (/data/fuzzer/lib/libc.so+0x49788) #2 0x75da52dae8\n ......\n 00000075e8a5d988 SUMMARY: HWAddressSanitizer: tag-mismatch\n (/system/lib64/libnetd_client.so+0x3984)\n\nSee the [CVE](https://cve.mitre.org/) site for information on detected security\nvulnerabilities."]]
