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samba: SMB1 client connections can be downgraded to plaintext authentication

🗓️ 29 Nov 2021 12:38:35Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 1 Views

A flaw in Samba server message block version one authentication allows downgrading to plaintext and revealing passwords even with Kerberos.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
ALT Linux		Security fix for the ALT Linux 10 package samba version 4.14.10-alt1
7 Nov 202100:00
–altlinux
IBM Security Bulletins		Security Bulletin: A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2016-2124)
21 Mar 202213:37
–ibm
FreeBSD		samba -- Multiple Vulnerabilities
10 Nov 202100:00
–freebsd
Tenable Nessus		Amazon Linux 2022 : ctdb, ctdb-pcp-pmda, libsmbclient (ALAS2022-2022-022)
11 Dec 202400:00
–nessus
Tenable Nessus		Amazon Linux 2022 : samba (ALAS2022-2022-224)
10 Dec 202200:00
–nessus
Tenable Nessus		Amazon Linux 2023 : libnetapi, libnetapi-devel, libsmbclient (ALAS2023-2023-032)
21 Mar 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : samba (ALAS-2022-1746)
11 Feb 202200:00
–nessus
Tenable Nessus		Amazon Linux AMI : samba (ALAS-2022-1564)
19 Feb 202200:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0176: samba (ALINUX3-SA-2022:0176)
14 May 202500:00
–nessus
Tenable Nessus		AlmaLinux 8 : samba (ALSA-2021:5082)
12 Mar 202200:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7x86_64ctdb0:4.11.6-114.el7rhgsctdb-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64libsmbclient0:4.11.6-114.el7rhgslibsmbclient-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64libsmbclient-devel0:4.11.6-114.el7rhgslibsmbclient-devel-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64libwbclient0:4.11.6-114.el7rhgslibwbclient-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64libwbclient-devel0:4.11.6-114.el7rhgslibwbclient-devel-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64python3-samba0:4.11.6-114.el7rhgspython3-samba-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64samba0:4.11.6-114.el7rhgssamba-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64samba-client0:4.11.6-114.el7rhgssamba-client-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7x86_64samba-client-libs0:4.11.6-114.el7rhgssamba-client-libs-0:4.11.6-114.el7rhgs.x86_64.rpm
Red Hat Enterprise Linux7anysamba-common0:4.11.6-114.el7rhgssamba-common-0:4.11.6-114.el7rhgs.noarch.rpm
Rows per page

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21 Nov 2025 18:27Current
6.8Medium risk
Vulners AI Score6.8
CVSS 24.3
CVSS 3.15.9
EPSS0.01718
CWE-287
Sambaserver message blockversion oneplaintext downgradepassword exposureKerberos
1