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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.0405 Buffer overflow vulnerability in FortiProxy SSL VPN through a crafted POST request 5 February 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FortiProxy SSL VPN Publisher: FortiGuard Operating System: Network Appliance Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-13381 Reference: ESB-2019.1822 Original Bulletin: https://fortiguard.com/psirt/FG-IR-20-232 - --------------------------BEGIN INCLUDED TEXT-------------------- Buffer overflow vulnerability in FortiProxy SSL VPN through a crafted POST request IR Number : FG-IR-20-232 Date : Feb 01, 2021 Risk : 3/5 CVSSv3 Score: 5.2 Impact : denial of service CVE ID : CVE-2018-13381 Summary A buffer overflow vulnerability in the SSL VPN portal of FortiProxy may allow an unauthenticated, remote attacker to perform a Denial of Service attack by sending a specifically crafted POST request with a large msg value. Impact denial of service Affected Products FortiProxy versions 2.0.0 FortiProxy versions 1.2.8 and below. FortiProxy versions 1.1.6 and below. FortiProxy versions 1.0.7 and below. Solutions Please upgrade to FortiProxy versions 1.2.9 and above. Please upgrade to FortiProxy versions 2.0.1 and above. Acknowledgement Fortinet is pleased to thank Meh Chang and Orange Tsai from DEVCORE Security Research Team for reporting 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYByCMuNLKJtyKPYoAQgZpQ//c6NOPKM7V327RENGebPLHsi+biiTaQ8n 1WmIVatRLTPGoQoRuK7glHZ6gO4DqiORXX7RRo202ZTujlMrL1mWk8X3Vv0kqYDA CnjLCb9D2BbPHk5fsoAIrvUzmkhc0ZjdFnyplTJNlx9VI+ytPfhXrHBtPyE8wUmP Ai97zisT+I5dNqSr/XTVkopCs574mNPKYJzGbs3qzNQG9amUkxvKA+mmcAoI97Yy oeIVVRchMQzoFSOvQZsFMZiB3iPaeudkGucxyXDP1PC7LgWdGXuLkrlB8h0BXVn6 jWskqgYs35bv06SSxQAWPZmzhTVvTnYQepRk5I6xGt0G1ltmRpzDP/s8eI9mijLy NXu4u1a2SF4Oal0NK+PxVIee85VHSLqAi7v8KxplickffqQ73FhtBflYyACFt9eP dQ8/XnXexdMHK4OkQol5chaRBQQ9gXc7Xf/FjH1lnkyjwFMKb79tWzL+ElFnaFRa 8kNABzOhpWkH5qrPU4t2rl5Ms8KFlpMGyymQudBGQHPTFs0ucrvOEM9oYSJZAhRR P5udKpq9cKiT1g9ue7MDYufdfhQ+Ol2nrVxGTSH0hWnPYJ5vXPSXuRYzMcgBsbyL QUshEu8krRWbVZfLVDtrQhGNYRhfAuzPWHELXKG5dzrd9qxLkWmo9a8JBbByfLA1 a1N+UHqhgRw= =tw7i -----END PGP SIGNATURE-----