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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1891 FortiWLC security update 2 June 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FortiWLC Publisher: FortiGuard Labs Operating System: Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Cross-site Scripting -- Remote with User Interaction Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-26094 CVE-2021-26093 CVE-2021-26087 Original Bulletin: https://fortiguard.com/psirt/FG-IR-21-002 https://fortiguard.com/psirt/FG-IR-21-001 https://fortiguard.com/psirt/FG-IR-20-137 Comment: This bulletin contains three (3) FortiGuard Labs security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- FortiWLC - Access of Uninitialized Pointer vulnerability IR Number : FG-IR-21-002 Date : Jun 01, 2021 Risk : 3/5 CVSSv3 Score : 6.6 Impact : Denial of service CVE ID : CVE-2021-26093 Summary An access of uninitialized pointer (CWE-824) vulnerability in FortiWLC may allow a local and authenticated attacker to crash the access point being managed by the controller by executing a crafted CLI command. Impact Denial of service Affected Products FortiWLC version 8.6.0. FortiWLC versions 8.5.3 and below. Solutions Please upgrade to FortiWLC version 8.6.1 or above. Please upgrade to FortiWLC version 8.5.4 or above. Acknowledgement Fortinet is pleased to thank a FortiWLC customer for bringing this issue to our attention. - -------------------------------------------------------------------------------- FortiWLC - Multiple Buffer Overflow vulnerabilities IR Number : FG-IR-21-001 Date : Jun 01, 2021 Risk : 3/5 CVSSv3 Score : 6.9 Impact : Remote code execution, Denial of Service CVE ID : CVE-2021-26094 Summary Multiple instances of stack-based buffer overflow vulnerability (CWE-121) in the command line interface of FortiWLC may allow a local, authenticated attacker to crash the access point being managed by the controller and potentially execute unauthorized code via a specifically crafted CLI command. Impact Remote code execution, Denial of Service Affected Products FortiWLC versions 8.6.0 and below. FortiWLC versions 8.5.3 and below. Solutions Please upgrade to FortiWLC version 8.6.1 or above. Please upgrade to FortiWLC version 8.5.4 or above. Acknowledgement Internally discovered and reported by Nesrine Kortas from Fortinet PSIRT. - -------------------------------------------------------------------------------- FortiWLC - XSS vulnerability IR Number : FG-IR-20-137 Date : May 28, 2021 Risk : 3/5 CVSSv3 Score : 4.2 Impact : Execute unauthorized code or commands CVE ID : CVE-2021-26087 Summary An improper neutralization of input during web page generation in FortiWLC web interface may allow both authenticated remote attackers and non-authenticated attackers in the same network as the appliance to perform a stored cross site scripting attack (XSS) via injecting malicious payloads in different locations. Impact Execute unauthorized code or commands Affected Products FortiWLC version 8.6.0. FortiWLC versions 8.5.3 and below. Solutions Please upgrade to FortiWLC version 8.6.1 or above. Please upgrade to FortiWLC version 8.5.4 or above. Acknowledgement Fortinet is pleased to thank the customer who reported this vulnerability under responsible disclosure. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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