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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.2230.2 FortiOS SSL VPN user credential plaintext storage 28 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FortiOS Publisher: Fortiguard Operating System: Network Appliance Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-17655 Reference: ESB-2020.0320 Original Bulletin: https://fortiguard.com/psirt/FG-IR-19-217 Revision History: September 28 2021: Vendor updated Affected Products and Solution details June 29 2020: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- FortiOS SSL VPN user credential plaintext storage IR Number : FG-IR-19-217 Date : Sep 7, 2021 Risk : 3/5 Impact : Information Disclosure CVE ID : CVE-2019-17655 Affected Products: FortiOS: 6.2.2, 6.2.1, 6.2.0, 6.0.9, 6.0.8, 6.0.7, 6.0.6, 6.0.5, 6.0.4, 6.0.3, 6.0.2, 6.0.1, 6.0.0, 5.6.9, 5.6.8, 5.6.7, 5.6.6, 5.6.5, 5.6.4, 5.6.3, 5.6.2, 5.6.13, 5.6.12, 5.6.11, 5.6.10, 5.6.1, 5.6.0, 5.4.9, 5.4.8, 5.4.7, 5.4.6, 5.4.5, 5.4.4, 5.4.3, 5.4.2, 5.4.13, 5.4.12, 5.4.11, 5.4.10, 5.4.1, 5.4.0, 5.2.9, 5.2.8, 5.2.7, 5.2.6, 5.2.5, 5.2.4, 5.2.3, 5.2.2, 5.2.15, 5.2.14, 5.2.13, 5.2.12, 5.2.11, 5.2.10, 5.2.1, 5.2.0 Language : English Portuguese Summary A cleartext storage in a file or on disk (CWE-313) vulnerability in FortiOS SSL VPN may allow an attacker to retrieve a logged-in SSL VPN user's credentials should that attacker be able to read the session file stored on the targeted device's system. To successfully exploit this weakness, another unrelated weakness (eg: a system file leaking vulnerability) would therefore need to be exploited first. Affected Products FortiOS 6.2.0 to 6.2.2, 6.0.9 and below, 5.6.13 and below Solutions Upgrade to FortiOS 5.6.14 or 6.0.10 or 6.2.3 or above Revision History: 2020-01-27 Initial Version 2020-06-26 New fix on 6.0.10 released. 2021-07-29 New fix on 5.6.14 released. References o https://blog.orange.tw/2019/08/ attacking-ssl-vpn-part-2-breaking-the-fortigate-ssl-vpn.html - --------------------------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 iQIVAwUBYVKbGONLKJtyKPYoAQgm9A//fVqB/ivhj2zDwF20iACr9xF0+F+a43RB nKSezWaaFVBfyDS8znOFxOWkE7AU25SjEqjtYWWqH30jQGK8lvYfZlTfdloJFVyU Jv+Fkl28QQ6Ojiy5WCQEqrNP41VkcFKtq5+TSSFxH9ROW933imy6n0wgrL+/o3/f XHVgjIz2LnSJMD8IN4VmJzKRlnz/WrmX6ouOjgW6/dlpbobAmyGMA31Y4P5aJRnI bcal7t8jDa5we/7JG2yI0KxJ6EhnZ3TN//kW0hKZfQNYdjCvFV9Bi4HVho2gOQ6D HSpW91lyq65fDX8fi0GrN78lnIGQ7JzF4MeK+pXhYFVj1B3B3FUF4GjLfBOmZ18o 9c2GhbbiLjZ3X8Scrt/htn/BIyRGNmiO2xgqOsU5Xv4F+7kgwFkwFLE7y58d6DGm QkgzqOluo6ZFPM+CsOpWNpAb973ZUs6JhshtpQL3EX6ptDmM0oA3KveMZFLFw4zG UPegJYGn1wLEXHan4so6bp3bwQpQXdi424gxpGJ/57+WiMIIgO0vk7/pje5hCrc1 S7KeKRbxqa/7q6CODFgyfJST2NKngvYtHaE8zgEpBSH6QrpueLZphxvsZRUlPeSC UaIk6S+vVpLQLlgOLQt+Ouuu88Hnl1dBKwQGBGtrIoQBpkEDko6GwARMGwwQRVeY NaOjEFw7HnU= =eic/ -----END PGP SIGNATURE-----