29 January 2020
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0320 FortiOS SSL VPN user credential plaintext storage 29 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: FortiOS SSL VPN Publisher: Fortiguard Operating System: Network Appliance Impact/Access: Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-17655 Original Bulletin: https://fortiguard.com/psirt/FG-IR-19-217 - --------------------------BEGIN INCLUDED TEXT-------------------- FortiOS SSL VPN user credential plaintext storage IR Number : FG-IR-19-217 Date : Jan 27, 2020 Risk : 3/5 Impact : Information Disclosure CVE ID : CVE-2019-17655 CVE ID : CVE-2019-17655 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. Impact Information Disclosure Affected Products FortiOS all versions below 6.2.3 Solutions Upgrade to FortiOS 6.2.3 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 firstname.lastname@example.org 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: email@example.com 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 iQIVAwUBXjEbQ2aOgq3Tt24GAQiSFhAAjyLHgUjScn93JjQ429bEr8E6jt3KAFRy XM1y1N9XbX9oz+tz4l5J3iSIlzST9ELXMF9QIFVv5qw1DWyC2fJ381wWjLkq2IN8 QqD4bxFicvROIIz0R4rtvS8lcUNHLgCyQ6bLk0uaN5/o8Y3r15Rc+HX1YU5h1iXX h3c+StMM1A3TBg0lyklM0bq0zoYtfHJfgN5qm3H0hon3uxJX/r4si9824tl4mZDa kCGuddgRasE4rviYIcR7PdHTTPWgxlEgcgE8R5ZISz4dT/HoKo2Cx2jLAuSUQfko fvQAn+rzvhbr5fQEcIJVW0ayVoKzquwxV0Iq73pit9kYi8lviHk5x9HcetJsrTsZ GSt9nu2Oceo0ezmdXi1uxlwniyIcguikMgYDFdGWJGZRMHg+Mr8rq/bdRDntY+DO SKay5S11JyABp6ZmL7rQ0h+0v3m/kUNivRgyx+8c/JUmOi/4KQJ1A5w2j4MbpOiM m91BhRZgxjLCaW4oUgvtydeEtRcmhNuTHZ6CQCBUKfdcLptRVRf2pSE1CWysOCEI ZKXSrxi9ukllXqVNREJmK0K3pFNRuynza/JjIsw57lP8p6TLM2Gy0D0A910d8l8x +1Of2cDooWoE3hESiMxbEf1vv7JFmB/auTo4PJrHzsZrcFGRhcfRiZwMA5Psclz9 kG+V5YsjD1E= =nRBn -----END PGP SIGNATURE-----