Add Telegram Desktop fuzzers #14110
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Add Telegram Desktop fuzzers #14110
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This adds fuzzing support for Telegram Desktop's MTProto protocol and encryption implementation. Project repository: https://github.com/telegramdesktop/tdesktop Fuzzer branch: https://github.com/telegramdesktop/tdesktop/tree/ossFuzz/fuzzing Fuzzers included (8 total): MTProto Protocol Stack: - mtproto_v0_fuzzer: Basic MTProto v0 protocol parsing - mtproto_v1_obfuscated_fuzzer: SHA256-based obfuscated handshake - mtproto_vd_padded_fuzzer: Padded protocol with anti-DPI - tl_serialization_fuzzer: Type Language binary serialization - aes_ctr_obfuscation_fuzzer: AES-256-CTR connection obfuscation Private Message Encryption: - aes_ige_encryption_fuzzer: AES-IGE mode used for all messages - message_key_derivation_fuzzer: SHA1/SHA256 key derivation - auth_key_management_fuzzer: 2048-bit authorization key handling Technical details: - Standalone design with zero dependencies on tdesktop codebase - Fast build time (~10 seconds for all 8 fuzzers) - Performance: 17,000 - 326,000 exec/sec depending on fuzzer - Sanitizers: AddressSanitizer, UndefinedBehaviorSanitizer, MemorySanitizer - Total fuzzer code: 2,435 lines All fuzzers have been tested locally with libFuzzer and pass check_build verification.
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vah13 is integrating a new project: |
DavidKorczynski
requested changes
Oct 14, 2025
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Are you a Telegram maintainer? we need approval from maintainers that they are okay with this integration and will respond to issues found.
I assume we're waiting for telegramdesktop/tdesktop#29878 as well?
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Can you double confirm this is intended and also matches the policy of Telegram?
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I'm not a telegram maintainer, but I'm on the way to integrating OSS-Fuzz with TG.
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This adds fuzzing support for Telegram Desktop's MTProto protocol and encryption implementation.
Project repository: https://github.com/telegramdesktop/tdesktop
Fuzzer branch: https://github.com/telegramdesktop/tdesktop/tree/ossFuzz/fuzzing
Fuzzers included (8 total):
MTProto Protocol Stack:
Private Message Encryption:
Technical details:
All fuzzers have been tested locally with libFuzzer and pass check_build verification.