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Published: 15 April 2020

A flaw was found in Linux, in targetcli-fb versions 2.1.50 and 2.1.51 where the socket used by targetclid was world-writable. If a system enables the targetclid socket, a local attacker can use this flaw to modify the iSCSI configuration and escalate their privileges to root.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
eoan Ignored
(end of life)
Released (1:2.1.51-0ubuntu1+esm1)
Available with Ubuntu Pro
groovy Not vulnerable
hirsute Not vulnerable
impish Not vulnerable
jammy Not vulnerable
kinetic Not vulnerable
lunar Not vulnerable
mantic Not vulnerable
noble Not vulnerable
trusty Does not exist

upstream Not vulnerable
(debian: Vulnerable code introduced later)
xenial Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H