High severity · published Jul 27, 2018
CVE-2017-12151
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
7.4
CVSS
4.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CS
Cifs Server · HP
b.04.05.11.00 · source: NVD
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.4 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.4; 7.5 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
SA
Samba · Samba
before 4.4.16; 4.5.0 before 4.5.14; 4.6.0 before 4.6.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-12151
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-12151
Third Party Advisory
http://www.securityfocus.com/bid/100917
Third Party Advisory
http://www.securitytracker.com/id/1039401
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2790
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2858
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12151
Third Party Advisory
https://security.netapp.com/advisory/ntap-20170921-0001/
More from Debian Linux
10.0
CVE-2025-32433
Erlang/OTP SSH Vulnerable to Pre-Authentication RCE
10.0
CVE-2025-24201
Apple Multiple Products WebKit Out-of-Bounds Write Vulnerability
10.0
CVE-2021-44228
Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints
10.0
CVE-2015-3306
ProFTPD Improper Access Control Vulnerability
9.8
CVE-2026-24061
GNU InetUtils Argument Injection Vulnerability