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PSIRT Advisories

The FortiGuard Labs Product Security Incident Response Team (PSIRT) continually test Fortinet hardware and software products, looking for vulnerabilities and weaknesses. Any such findings are fed back to Fortinet's development teams and serious issues are described along with protective solutions in the advisories below.

Cross-Site-Scripting (XSS) vulnerabilty in Fortiweb reports
The URL part of the report message is not encoded in Fortinet FortiWeb which may allow an attacker to execute unauthorized code...
Jun 12, 2019 Risk IR Number: FG-IR-19-070
FortiOS system file leak through SSL VPN via specially crafted HTTP resource requests
A path traversal vulnerability in the FortiOS SSL VPN web portal may allow an unauthenticated attacker to download FortiOS system...
Jun 04, 2019 Risk IR Number: FG-IR-18-384
Unauthenticated SSL VPN users password modification
An Improper Authorization vulnerability in the SSL VPN web portal may allow an unauthenticated attacker to change the password...
Jun 04, 2019 Risk IR Number: FG-IR-18-389
FortiOS by default disables SMBv1 support
Server Message Block (SMB) 1.0 - a legacy file and print sharing protocol - has been deprecated by Microsoft due to multiple weaknesses...
Jun 04, 2019 Risk IR Number: FG-IR-17-103
Meltdown and Spectre class vulnerabilities
New types of side channel attacks impact most processors including Intel, AMD, ARM, etc. These attacks allow malicious userspace...
May 24, 2019 Risk IR Number: FG-IR-18-002
FortiOS reflected XSS in the SSL VPN web portal error page parameters
Failure to sanitize input in the SSL VPN web portal may allow an attacker to perform a reflected Cross-site Scripting (XSS) attack...
May 24, 2019 Risk IR Number: FG-IR-19-034
FortiOS multiple pre-auth XSS vulnerabilities on SSL VPN
Failure to sanitize the error or message handling parameters in the SSL VPN web portal may allow an attacker to perform a Cross-site...
May 24, 2019 Risk IR Number: FG-IR-18-383
FortiGate SSL VPN web portal login redir XSS vulnerability
Failure to sanitize the login redir parameter in the SSL-VPN web portal may allow an attacker to perform a Cross-site Scripting...
May 24, 2019 Risk IR Number: FG-IR-17-242
FortiOS SSL VPN web portal Host Header Redirection
A Host Header Redirection vulnerability exists in FortiOS SSL-VPN web portal: when an attacker submits specially crafted HTTP...
May 17, 2019 Risk IR Number: FG-IR-19-002
FortiOS VM images lack an integrity check of the file system at boot time
FortiOS VM appliance lack of root file system integrity check may allow an attacker with read/write access to the VM image (before...
May 17, 2019 Risk IR Number: FG-IR-19-017
FortiOS SSL VPN buffer overrun through POST message payload
Failure to properly parse message payloads in the SSL VPN portal of FortiOS may allow a non-authenticated attacker to perform...
May 17, 2019 Risk IR Number: FG-IR-18-387
SSL VPN buffer overrun when parsing javascript href content
A heap buffer overflow vulnerability in the FortiOS SSL VPN web portal may cause the SSL VPN web service termination for logged...
May 17, 2019 Risk IR Number: FG-IR-18-388
FortiClient DLL Hijacking Vulnerability
An Unsafe Search Path vulnerability in FortiClient Online Installer may allow an unauthenticated, remote attacker with control...
May 16, 2019 Risk IR Number: FG-IR-19-060
FortiCASB data pattern name XSS vulnerability
Failure to sanitize input in the customized data pattern webpage of FortiCASB  may allow an authenticated attacker to conduct...
May 15, 2019 Risk IR Number: FG-IR-19-001
Multiple VPN applications insecurely store session cookies
The Missing Encryption Of Sensitive Data vulnerability in FortiClient may allow an attacker to access VPN session cookie from...
Apr 23, 2019 Risk IR Number: FG-IR-19-110