Bump asyncssh from 2.21.0 to 2.24.0

[dependabot]

Bumps asyncssh from 2.21.0 to 2.24.0.

Changelog

Sourced from asyncssh's changelog.

Release 2.24.0 (27 Jun 2026)

• Added support for creating and validating SSHSIG signatures, as well as OpenSSH "allowed signers" files.

• Added support for ML-KEM key exchange from the PyCA cryptography package when it is available. This avoids the need to have the liboqs library installed to use ML-KEM. However, liboqs is still required to support SNTRUP kex exchange.

• Fixed an issue with handling of SSH maximum packet size when opening a new SSH channel, aborting with a protocol error if a peer attempts to set this size to 0. Thanks go to GitHub user afldl for reporting this issue and providing analysis and reproduction code.

• Fixed an issue with include directives in OpenSSH config files. Thanks go to GitHub users sethholmes and tazle for reporting this issue and providing analysis and a proposed fix.

Release 2.23.1 (6 Jun 2026)

• Fixed an SCP path traversal issue. Thanks go to Jaden Furtado for reporting this issue.

• Expanded previous fix to block unsafe user substitutions in server config. Thanks go to GitHub user cesabici-bit for reporting this issue.

• Fixed default value for reuse_address and reuse_port, matching the behaavior of asyncio.create_server(). Thanks go to Alexander Shlemin for reporting the inconsistency.

Release 2.23.0 (8 May 2026)

• Added support for "Match localnetwork". Thanks go to Théophile Bastian for reporting this new match type, added in OpenSSH 9.4.

• Enabled support for RSA with SHA-2 signatures in ssh-agent and Pageant. Thanks go to GitHub user Netzvamp for reporting this.

• Changed MAC algorithm negotiation to be skipped when using AEAD ciphers. Thanks go to GitHub user LilleCarl for reporting this issue and suggesting a potential fix.

• Improved graceful termination when using ProxyCommand, waiting for the ProxyCommand tunnel to close when cleaning up a connection. Thanks go to Simon Liétar for reporting this issue and helping to investigate

... (truncated)

Commits

• 3577224 Bump version number up to 2.24.0 and update change log
• 321588d Avoid a coverage issue on a protocol definition
• eefa2fa Update the documentation to list supported SSHSIG options
• 9c35427 Add input validation on maximum packet size
• c3ab96f Remove unused import
• b3039b2 Bump cryptography from 2.8 to 48.0.1 in /docs
• 9ef998c Bump cryptography min version to pick up security vulnerability fix
• d1caa62 Add support for ML-KEM implementation in PyCA
• c0d349b Fix an issue with include directives in SSH confid files
• 87c58b2 Add support for creating and validating SSHSIG format signatures
• Additional commits viewable in compare view

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