Operating System:

[Mac]

Published:

14 July 2021

Protect yourself against future threats.

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2378
     FortiClient for Max Execute Arbitrary Code/Commands Vulnerability
                               14 July 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           FortiClient
Publisher:         FortiGuard
Operating System:  Mac OS
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-26089  

Original Bulletin: 
   https://fortiguard.com/psirt/FG-IR-21-022

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FortiClientMac - Privilege escalation by abusing a Symlink following vulnerability

IR Number    : FG-IR-21-022
Date         : Jul 05, 2021
Risk         : 3/5
CVSSv3 Score : 6.3
Impact       : Arbitrary code execution
CVE ID       : CVE-2021-26089
Affected Products: FortiClientMac

Summary

A UNIX symbolic link (Symlink) Following (CWE-61) vulnerability in FortiClient
for MacOS may allow a local and unprivileged user to overwrite privileged shell
scripts executed during the installation phase via escalating their privileges
to root.

Impact

Arbitrary code execution

Affected Products

FortiClient for MacOS versions 6.4.3 and below.

Solutions

Please upgrade to FortiClient for MacOS version 6.4.4 or above.
Please upgrade to FortiClient for MacOS version 7.0.0 or above.

Acknowledgement

Fortinet is pleased to thank Csaba Fitzl and Trend Micro Zero Day Initiative
for bringing this issue to our attention under responsible disclosure.

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