CVE-2020-25717

NameCVE-2020-25717
DescriptionA flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-5003-1, DSA-5015-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
samba (PTS)buster2:4.9.5+dfsg-5+deb10u3fixed
buster (security)2:4.9.5+dfsg-5+deb10u5fixed
bullseye2:4.13.13+dfsg-1~deb11u5fixed
bullseye (security)2:4.13.13+dfsg-1~deb11u6fixed
bookworm, bookworm (security)2:4.17.12+dfsg-0+deb12u1fixed
trixie2:4.20.1+dfsg-5fixed
sid2:4.20.2+dfsg-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sambasourcebuster2:4.9.5+dfsg-5+deb10u2DSA-5015-1
sambasourcebullseye2:4.13.13+dfsg-1~deb11u2DSA-5003-1
sambasource(unstable)2:4.13.14+dfsg-1

Notes

https://bugzilla.samba.org/show_bug.cgi?id=14556
https://bugzilla.samba.org/show_bug.cgi?id=14725
https://www.samba.org/samba/security/CVE-2020-25717.html
A new parameter "min domain uid" (defaults to 1000) has been added,
which enforces that no UNIX uid below this value will be accepted.

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