CVE-2024-56433

NameCVE-2024-56433
Descriptionshadow-utils (aka shadow) 4.4 through 4.17.0 establishes a default /etc/subuid behavior (e.g., uid 100000 through 165535 for the first user account) that can realistically conflict with the uids of users defined on locally administered networks, potentially leading to account takeover, e.g., by leveraging newuidmap for access to an NFS home directory (or same-host resources in the case of remote logins by these local network users). NOTE: it may also be argued that system administrators should not have assigned uids, within local networks, that are within the range that can occur in /etc/subuid.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1103832

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
shadow (PTS)bullseye1:4.8.1-1vulnerable
bullseye (security)1:4.8.1-1+deb11u1vulnerable
bookworm1:4.13+dfsg1-1vulnerable
sid, trixie1:4.17.4-2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
shadowsource(unstable)(unfixed)1103832

Notes

[bookworm] - shadow <no-dsa> (Minor issue)
[bullseye] - shadow <postponed> (Minor issue, disputed, no upstream patch)
https://github.com/shadow-maint/shadow/issues/1157

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