FortiSwitch: Denial of Service -- Remote/Unauthenticated

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.1890
            FortiSwitch - memory leak issue in lldpmedd daemon
                                2 June 2021

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        AusCERT Security Bulletin Summary
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Product:           FortiSwitch
Publisher:         FortiGuard Labs
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-26111  

Original Bulletin: 
   https://fortiguard.com/psirt/FG-IR-21-026

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FortiSwitch - memory leak issue in lldpmedd daemon

IR Number    : FG-IR-21-026
Date         : Jun 01, 2021
Risk         : 3/5
CVSSv3 Score : 6.2
Impact       : Denial of service
CVE ID       : CVE-2021-26111

Summary

A missing release of memory after effective lifetime vulnerability in
FortiSwitch may allow an attacker on an adjacent network to exhaust available
memory by sending specifically crafted LLDP/CDP/EDP packets to the device.

Impact

Denial of service

Affected Products

FortiSwitch versions 6.4.6 and below. FortiSwitch versions 6.2.6 and below.
FortiSwitch versions 6.0.x FortiSwitch versions 3.6.x

Solutions

Please upgrade to FortiSwitch 7.0.0.
Please upgrade to FortiSwitch version 6.4.7 or above.
Please upgrade to FortiSwitch version 6.2.7 or above.

Acknowledgement

Fortinet is pleased to thank Qian Chen(@cq674350529) of Qihoo 360 Nirvan Team
for reporting this vulnerability under responsible disclosure.

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