CVE-2017-12151

Name: CVE-2017-12151
Creator: NVD / NIST
Published: 2018-07-27T12:29:00.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 4.59%

Last modified Jun 17, 2026

CVE-2017-12151 is a vulnerability of currently unknown severity. A flaw was found in the way samba client before samba 4.4.16, samba 4.5.14 and samba 4.6.8 used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack.. EPSS estimates a 4.59% chance of exploitation in the next 30 days.

Description

A flaw was found in the way samba client before samba 4.4.16, samba 4.5.14 and samba 4.6.8 used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack.

Metrics

EPSS Probability

4.59%

90.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samba	Samba	< 4.4.16
Samba	Samba	>= 4.5.0, < 4.5.14
Samba	Samba	>= 4.6.0, < 4.6.8
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server Aus	7.4
Redhat	Enterprise Linux Server Eus	7.4
Redhat	Enterprise Linux Server Eus	7.5
Redhat	Enterprise Linux Workstation	7.0
Hp	Cifs Server	b.04.05.11.00

References

http://www.securityfocus.com/bid/100917Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039401Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2790Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2858Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12151Issue Tracking, Third Party Advisory
https://security.netapp.com/advisory/ntap-20170921-0001/Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_usThird Party Advisory
https://www.debian.org/security/2017/dsa-3983Third Party Advisory
https://www.samba.org/samba/security/CVE-2017-12151.htmlMitigation, Vendor Advisory
http://www.securityfocus.com/bid/100917Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039401Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2790Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2858Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12151Issue Tracking, Third Party Advisory
https://security.netapp.com/advisory/ntap-20170921-0001/Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_usThird Party Advisory
https://www.debian.org/security/2017/dsa-3983Third Party Advisory
https://www.samba.org/samba/security/CVE-2017-12151.htmlMitigation, Vendor Advisory

Timeline

Published: Jul 27, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-12151?

How severe is CVE-2017-12151?

Severity scoring for CVE-2017-12151 is pending analysis. The EPSS model estimates a 4.59% probability of exploitation in the next 30 days.

How do I fix CVE-2017-12151?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-12151?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST