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samba: SMB1 client connections can be downgraded to plaintext authentication

🗓️ 29 Nov 2021 12:38:32Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 1 Views

Samba flaw downgrades version one to plaintext authentication, exposing credentials when Kerberos is used.

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Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8x86_64ctdb0:4.14.5-204.el8rhgsctdb-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64ctdb-debuginfo0:4.14.5-204.el8rhgsctdb-debuginfo-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64libsmbclient0:4.14.5-204.el8rhgslibsmbclient-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64libsmbclient-debuginfo0:4.14.5-204.el8rhgslibsmbclient-debuginfo-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64libsmbclient-devel0:4.14.5-204.el8rhgslibsmbclient-devel-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64libwbclient0:4.14.5-204.el8rhgslibwbclient-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64libwbclient-debuginfo0:4.14.5-204.el8rhgslibwbclient-debuginfo-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64libwbclient-devel0:4.14.5-204.el8rhgslibwbclient-devel-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64python3-samba0:4.14.5-204.el8rhgspython3-samba-0:4.14.5-204.el8rhgs.x86_64.rpm
Red Hat Enterprise Linux8x86_64python3-samba-debuginfo0:4.14.5-204.el8rhgspython3-samba-debuginfo-0:4.14.5-204.el8rhgs.x86_64.rpm
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28 Jun 2026 12:35Current
6.8Medium risk
Vulners AI Score6.8
CVSS 24.3
CVSS 3.15.9
EPSS0.0176
1