What’s Vulnerable › Vulnerabilities

CVE-2017-12150

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 13.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-26 · updated 2026-06-17
• Weakness: CWE-300

Description

It was found that samba before 4.4.16, 4.5.x before 4.5.14, and 4.6.x before 4.6.8 did not enforce "SMB signing" when certain configuration options were enabled. A remote attacker could launch a man-in-the-middle attack and retrieve information in plain-text.

Affected products

• Debian Linux: 8.0, 9.0
• RedHat Enterprise Linux Desktop: 6.0, 7.0
• RedHat Enterprise Linux Server: 6.0, 7.0
• RedHat Enterprise Linux Workstation: 6.0, 7.0
• Red Hat, Inc. Gluster Storage for RHEL 6: 3.0
• Samba: from 3.0.25 before 4.4.16; from 4.5.0 before 4.5.14; from 4.6.0 before 4.6.8 — fixed in 4.4.16, 4.5.14, 4.6.8

How to fix

Upgrade to a fixed version: Samba 4.4.16, 4.5.14, 4.6.8. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/100918
• http://www.securitytracker.com/id/1039401
• https://access.redhat.com/errata/RHSA-2017:2789
• https://access.redhat.com/errata/RHSA-2017:2790
• https://access.redhat.com/errata/RHSA-2017:2791
• https://access.redhat.com/errata/RHSA-2017:2858
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12150
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbns03775en_us
• https://security.netapp.com/advisory/ntap-20170921-0001/
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03817en_us
• https://www.debian.org/security/2017/dsa-3983
• https://www.samba.org/samba/security/CVE-2017-12150.html

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