DescriptionAn issue in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a "Rogue Extension Negotiation."
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1056000

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
python-asyncssh (PTS)bullseye2.5.0-0.1vulnerable
sid, trixie, bookworm2.10.1-2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - python-asyncssh <no-dsa> (Minor issue)
[bullseye] - python-asyncssh <no-dsa> (Minor issue)
[buster] - python-asyncssh <no-dsa> (Minor issue) (v2.14.1)

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