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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.

FortiClient NDIS Miniport Driver Null Pointer Dereference
There is a Null pointer dereference in the NDIS Miniport drivers in FortiClient on Windows, which may be leveraged by an unprivileged...
Jan 11, 2019 Risk IR Number: FG-IR-18-092
FortiClient local privilege escalation exploit chain
A researcher has disclosed several vulnerabilities against FortiClient for Windows, the combination of these vulnerabilities can...
Dec 22, 2018 Risk IR Number: FG-IR-18-108
Uninitialized memory buffer leak in FortiOS explicit web proxy
An uninitialized memory buffer leak exists in FortiOS web proxy's disclaimer response web pages, potentially causing sensitive...
Nov 22, 2018 Risk IR Number: FG-IR-18-325
CVE-2018-10933 libssh authentication bypass
libssh versions 0.6 and above have an authentication bypass vulnerability inthe server code. By presenting the server an SSH2_MSG_USERAUTH_SUCCESS...
Nov 21, 2018 Risk IR Number: FG-IR-18-336
Cross-site scripting (XSS) vulnerability via DHCP Hostname parameter
An attacker could send DHCP request containing malicious scripts in the HOSTNAME parameter. The malicious script code is executed...
Nov 16, 2018 Risk IR Number: FG-IR-18-121
Serial number disclosure in the FortiOS PPTP server hostname protocol field
Fortigate PPTP service reveals serial number of FortiGate in the hostname field defined in connection control setup packets of...
Nov 16, 2018 Risk IR Number: FG-IR-18-101
Read-only admins can obtain LDAP credentials configured in FortiGate using LDAP test connectivity feature
Fortigate's read-only admins are able to point a LDAP server connectivity test request to a rogue LDAP server instead of the configured...
Nov 16, 2018 Risk IR Number: FG-IR-18-157
Bleichenbacher and Dictionary Attacks on IPsec IKE
Two new attacks on IPsec IKE (Internet Key Exchange) were recently disclosed [1], involving multiple ways to perform attacks against...
Aug 27, 2018 Risk IR Number: FG-IR-18-214
The ROBOT Attack - Return of Bleichenbacher's Oracle Threat
A plaintext recovery of encrypted messages or a Man-in-the-middle (MiTM) attack on RSA PKCS #1 v1.5 encryption may be possible...
Aug 27, 2018 Risk IR Number: FG-IR-17-302
VPNFilter botnet
On May 23, 2018, Talos disclosed in a blog post the discovery of a modular malware system they deemed "VPNFilter", affecting multiple...
Aug 27, 2018 Risk IR Number: FG-IR-18-106
FortiManager allows unauthorized viewing of vdoms settings by any adom standard users
A standard user with adom assignment can read the interface settings of vdoms unrelated to his/her adom.
Aug 27, 2018 Risk IR Number: FG-IR-18-016
Multiple Cross Site Scripting on FortiCloud Web Interface Login
Before August, 2018, parameters at /loginmgrlogin in forticloud.com were vulnerable to a Cross-Site-Scripting (XSS) attack.
Aug 24, 2018 Risk IR Number: FG-IR-18-026
Forgot password link doesn't expire after use
FortiCloud password reset link requested by the user takes one hour to expire even after password was changed successfully,...
Aug 24, 2018 Risk IR Number: FG-IR-18-074
Application control block page leaks private IP and hostname
The default replacement message in FortiOS' Application control block page reveals the private IP as well as the hostname of the...
Aug 23, 2018 Risk IR Number: FG-IR-18-085
FortiWeb Recursive URL Decoding is not enabled by default
FortiWeb's "Recursive URL Decoding" feature can detect URL-based attacks (among which XSS and SQL injection attempts) even when...
Aug 23, 2018 Risk IR Number: FG-IR-18-058