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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.1785.2 FortiClient DLL Hijacking Vulnerability 12 March 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FortiClient for Windows Publisher: Fortinet Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-9290 CVE-2020-9287 CVE-2019-5589 Original Bulletin: https://fortiguard.com/psirt/FG-IR-19-060 Revision History: March 12 2020: Vendor added CVEs 2020-9290 and 2020-9287. May 17 2019: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- FortiClient installer DLL Hijacking Vulnerability IR Number : FG-IR-19-060 Date : May 16, 2019 Risk : 3/5 Impact : Unauthorized code execution. CVE ID : CVE-2019-5589, CVE-2020-9287, CVE-2020-9290 Summary Multiple unsafe search path vulnerabilities in FortiClient online installers may allow an attacker with control over the directory in which the installers reside to execute arbitrary code on the system via uploading malicious .dll files in that directory. Impact Unauthorized code execution. Affected Products FortiClientOnlineInstaller.exe for FortiClient for Windows 6.0.5 and below (CVE-2019-5589) FortiClientOnlineInstaller.exe for FortiClient for Windows 6.2.3 and below (CVE-2020-9290) FortiClientVPNOnlineInstaller.exe for FortiClient VPN for Windows 6.2.3 and below (CVE-2020-9290) FortiClientEMSOnlineInstaller.exe for FortiClient EMS 6.2.1 and below (CVE-2020-9287) Solutions CVE-2019-5589: Use FortiClient for Windows online installer 6.0.6 or above CVE-2020-9290: Use FortiClient for Windows online installer 6.2.4 or above, and FortiClient VPN for Windows online installer 6.2.4 or above CVE-2020-9287: Use FortiClient EMS online installer 6.2.2 or above Revision History: 05-16-2019 Initial version 03-09-2020 add CVE-2020-9290 and CVE-2020-9287 Acknowledgement Fortinet is pleased to thank Independent security researcher Honc (honcbb@gmail.com) for reporting CVE-2019-5589 and CVE-2020-9290, Houjingyi (houjingyi647@gmail.com) for reporting CVE-2020-9290 and CVE-2020-9287, security researcher Eran Shimony from CyberArk Labs for reporting CVE-2020-9290 under responsible disclosures. - --------------------------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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