CVE-2022-0336

NameCVE-2022-0336
DescriptionThe Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs1004694

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
samba (PTS)buster, buster (security)2:4.9.5+dfsg-5+deb10u3vulnerable
bullseye (security), bullseye2:4.13.13+dfsg-1~deb11u5fixed
bookworm, sid2:4.17.3+dfsg-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
sambasourceexperimental2:4.16.0+dfsg-1
sambasourcebullseye2:4.13.13+dfsg-1~deb11u3
sambasource(unstable)2:4.16.0+dfsg-21004694

Notes

[buster] - samba <no-dsa> (Minor issue; affects Samba as AD DC)
https://www.samba.org/samba/security/CVE-2022-0336.html
https://bugzilla.samba.org/show_bug.cgi?id=14950

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