rust-bitcoin / rust-bitcoin / 25557928026

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Merge rust-bitcoin/rust-bitcoin#6136: backport: validate ASCII and preserve embedded nulls in CommandString parsing

<a class=hub.com/rust-bitcoin/rust-bitcoin/commit/ddb05e24e86431e31e3a952c26da547e3d9c7469">ddb05e24e fix: validate ASCII and preserve embedded nulls in CommandString parsing (Mitchell Bagot)

Pull request description:

  This is a backport of #4649.
  
  ---
  
  Previously, CommandString decoding would silently normalize invalid commands containing embedded null bytes. For example, "mem\0pool" would be incorrectly decoded as "mempool", bypassing consensus validation.
  
  Found through differential fuzzing between btcd and rust-bitcoin, where rust-bitcoin was accepting messages with embedded null bytes in Command fields while btcd (and Bitcoin Core) correctly reject them.
  
  Original author: Erick Cestari <erickcestari03@gmail.com>


ACKs for top commit:
  apoelstra:
    ACK ddb05e24e86431e31e3a952c26da547e3d9c7469; successfully ran local tests


Tree-SHA512: 74effd1d4042f478c36a4daa272e3bf311d

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16500 of 20165 relevant lines covered (81.82%)

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