CVE-2018-16853
published 2018-11-28CVE-2018-16853: Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos…
PriorityP430medium5.9CVSS 3.0
AVNACHPRNUINSUCNINAH
EPSS
3.08%
86.3th percentile
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | samba | < samba 2:4.9.2+dfsg-2 (bookworm) | samba 2:4.9.2+dfsg-2 (bookworm) |
| samba | samba | >= 0 < 2:4.9.2+dfsg-2 | 2:4.9.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.9.2+dfsg-2 | 2:4.9.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.9.2+dfsg-2 | 2:4.9.2+dfsg-2 |
| samba | samba | >= 0 < 2:4.9.2+dfsg-2 | 2:4.9.2+dfsg-2 |
| samba | samba | >= 4.7.0 < 4.7.12 | 4.7.12 |
| samba | samba | >= 4.8.0 < 4.8.7 | 4.8.7 |
| samba | samba | >= 4.9.0 < 4.9.3 | 4.9.3 |
CVSS provenance
nvdv3.05.9MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv5.9MEDIUM
vendor_debian7.5LOW
vendor_redhat7.5HIGH
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GHSA
GHSA-wggh-6fmq-953v: Samba from version 4
ghsa_unreviewed·2022-05-13
CVE-2018-16853 [MEDIUM] CWE-400 GHSA-wggh-6fmq-953v: Samba from version 4
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
OSV
CVE-2018-16853: Samba from version 4
osv·2018-11-28·CVSS 5.9
CVE-2018-16853 [MEDIUM] CVE-2018-16853: Samba from version 4
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
Red Hat
samba: S4U2Self crash with MIT KDC build
vendor_redhat·2018-11-28·CVSS 7.5
CVE-2018-16853 [HIGH] CWE-400 samba: S4U2Self crash with MIT KDC build
samba: S4U2Self crash with MIT KDC build
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
Samba versions 4.7 and later, built with MIT Kerberos support, are vulnerable to a crash via the S4U2self extension. A user in a Samba Active Directory domain can crash the KDC when
Debian
CVE-2018-16853: samba - Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD do...
vendor_debian·2018·CVSS 7.5
CVE-2018-16853 [HIGH] CVE-2018-16853: samba - Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD do...
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
Scope: local
bookworm: resolved (fixed in 2:4.9.2+dfsg-2)
bullseye: resolved (fixed in 2:4.9.2+dfsg-2)
forky: resolved (fixed in 2:4.9.2+dfsg-2)
sid: resolved (fixed in 2:4.9.2+dfsg-2)
trixie: resolved (fixed in 2:4.9.2+dfsg
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2018-16853 samba: S4U2Self crash with MIT KDC build [fedora-all]
bugzilla·2018-11-28·CVSS 7.5
CVE-2018-16853 [HIGH] CVE-2018-16853 samba: S4U2Self crash with MIT KDC build [fedora-all]
CVE-2018-16853 samba: S4U2Self crash with MIT KDC build [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedor
Bugzilla
CVE-2018-16853 samba: S4U2Self crash with MIT KDC build
bugzilla·2018-11-07·CVSS 7.5
CVE-2018-16853 [HIGH] CVE-2018-16853 samba: S4U2Self crash with MIT KDC build
CVE-2018-16853 samba: S4U2Self crash with MIT KDC build
Samba versions 4.7 and later built with MIT Kerberos support are vulnerable to a crash via the S4U2self extension.
Upstream Bug:
https://bugzilla.samba.org/show_bug.cgi?id=13571
Discussion:
External Reference:
https://www.samba.org/samba/security/CVE-2018-16853.html
---
Acknowledgments:
Name: The Samba Team
Upstream: Isaac Boukris
---
Created samba tracking bugs for this issue:
Affects: fedora-all [bug 1654093]
---
Statement:
This flaw does not affect the version of samba shipped with Red Hat Enterprise Linux because there is no support for samba as Active Directory Domain Controller.
http://www.securityfocus.com/bid/106026https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853https://security.gentoo.org/glsa/202003-52https://security.netapp.com/advisory/ntap-20181127-0001/https://www.samba.org/samba/security/CVE-2018-16853.htmlhttp://www.securityfocus.com/bid/106026https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853https://security.gentoo.org/glsa/202003-52https://security.netapp.com/advisory/ntap-20181127-0001/https://www.samba.org/samba/security/CVE-2018-16853.html
2018-11-28
Published