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Published: 23 August 2022

A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share.


per upstream, fixing this required a whole rewrite of the VFS
layer and there is no reasonable way to fix this in older
versions. Marking this CVE as ignored for older releases.


This issue can be mitigated by disabling SMB1, which is the default
configuration in Samba 4.11 and above. In environments where SMB1 cannot
be disabled, symlink support can be disabled with unix extensions = no.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
bionic Ignored

focal Ignored

hirsute Ignored

impish Ignored

jammy Ignored

kinetic Ignored

lunar Not vulnerable
mantic Not vulnerable
trusty Needed

Released (4.15.0)
xenial Needed

Severity score breakdown

Parameter Value
Base score 6.8
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N