Bug 1647246 (CVE-2018-16853) - CVE-2018-16853 samba: S4U2Self crash with MIT KDC build
Summary: CVE-2018-16853 samba: S4U2Self crash with MIT KDC build
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-16853
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1654093
Blocks: 1647248
TreeView+ depends on / blocked
 
Reported: 2018-11-07 00:10 UTC by Sam Fowler
Modified: 2021-02-16 22:47 UTC (History)
30 users (show)

Fixed In Version: samba 4.7.12, samba 4.8.7, samba 4.9.3
Doc Type: If docs needed, set a value
Doc Text:
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 Samba is built in the non-default MIT Kerberos configuration.
Clone Of:
Environment:
Last Closed: 2018-11-28 07:36:08 UTC
Embargoed:

Attachments (Terms of Use)

Description Sam Fowler 2018-11-07 00:10:03 UTC 
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
Comment 2 Sam Fowler 2018-11-28 03:01:47 UTC 
External Reference:

https://www.samba.org/samba/security/CVE-2018-16853.html
Comment 3 Sam Fowler 2018-11-28 03:02:10 UTC 
Acknowledgments:

Name: The Samba Team
Upstream: Isaac Boukris
Comment 4 Sam Fowler 2018-11-28 03:02:37 UTC 
Created samba tracking bugs for this issue:

Affects: fedora-all [bug 1654093]
Comment 5 Huzaifa S. Sidhpurwala 2018-11-28 07:36:27 UTC 
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.
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