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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.

Sweet32 Birthday attack in TLS
The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday...
Feb 07, 2019 Risk IR Number: FG-IR-17-173
Format String Vulnerability in SSH username
There is a format string vulnerability in the SSH username handling when connecting to FortiOS 5.6.0, that may lead to memory...
Jan 11, 2019 Risk IR Number: FG-IR-18-018
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
Meltdown and Spectre class vulnerabilities
New types of side channel attacks impact most processors including Intel, AMD, ARM, etc. These attacks allow malicious userspace...
Nov 22, 2018 Risk IR Number: FG-IR-18-002
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
PMKID attack on WPA/WPA2 WiFi networks
Makers of popular wifi hacking tool hashcat have discovered a way to improve WPA/WPA2 password brute-forcing: Leveraging the PMKID...
Sep 10, 2018 Risk IR Number: FG-IR-18-199
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