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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.

Meltdown and Spectre class vulnerabilities
A new type of side channel attacks impact most processors including Intel, AMD, ARM, etc. These attacks allow malicious userspace...
May 23, 2018 Risk IR Number: FG-IR-18-002
Firewall information leak to regular SSL VPN web portal users
A SSL VPN user logged in via the web portal can access internal FortiOS configuration information (eg: addresses) via specifically...
May 18, 2018 Risk IR Number: FG-IR-17-231
FortiOS local privilege escalation via malicious use of USB storage devices
An admin user with super_admin privileges can execute an arbitrary binary contained on an USB drive plugged to a FortiGate, via...
May 18, 2018 Risk IR Number: FG-IR-17-245
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...
May 16, 2018 Risk IR Number: FG-IR-18-058
FortiOS SSL Deep-Inspection badssl.com Compliance
US-Cert published a document at https://www.us-cert.gov/ncas/alerts/TA17-075A which outlines some security flaws that may be introduced...
May 16, 2018 Risk IR Number: FG-IR-17-160
Use of hardcoded credentials for communication between Meru access points and FortiWLC
FortiWLC included two hardcoded accounts which were used by Meru Access Points to report core dumps; these accounts had read/write...
May 04, 2018 Risk IR Number: FG-IR-17-274
FortiClient insecure VPN credential storage and encryption
In certain conditions, FortiClient users' VPN credentials are stored in improperly secured locations and unsafely encrypted.[CVE-2017-14184]When...
Apr 20, 2018 Risk IR Number: FG-IR-17-214
AMD processors affected by vulnerabilities: Ryzenfall, Fallout, Chimera and Masterkey
A collection of AMD vulnerabilities known as "Ryzenfall, Fallout, Chimera, Masterkey" has been released. Attackers in possession...
Apr 13, 2018 Risk IR Number: FG-IR-18-046
BranchScope: New CPU Side-Channel Attack
A new side-channel attack that takes advantage of the speculative execution feature of modern processors to recover data from...
Apr 03, 2018 Risk IR Number: FG-IR-18-067
FortiWeb's cookie tampering protection can be bypassed by erasing the FortiWeb session cookie
FortiWeb 5.6.0 introduced a feature called "Signed Security Mode", which, when enabled, would prevent an attacker from tampering...
Mar 06, 2018 Risk IR Number: FG-IR-17-279
HTTP Host header attacks against web proxy disclaimer response webpage
The FortiOS web proxy disclaimer page is potentially vulnerable to an XSS attack, via maliciously crafted "Host" headers in user...
Jan 22, 2018 Risk IR Number: FG-IR-17-262
Intel-SA-00086 Security Review Cumulative Update
Intel recently released a security update (Intel-SA-00086), regarding Intel ME 11.x, SPS 4.0, and TXE 3.0 intel products.The following...
Jan 04, 2018 Risk IR Number: FG-IR-17-271
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 is possible without...
Dec 22, 2017 Risk IR Number: FG-IR-17-302
Gain Windows privileges with FortiClient vpn before logon and untrusted certificate
When the "VPN before logon" feature of FortiClient Windows is enabled (disabled by default), and when the server certificate is...
Dec 13, 2017 Risk IR Number: FG-IR-17-070
SSL VPN Web Portal user credentials may be leaked to super_admins
An admin user with super_admin privileges (i.e. with a super_admin profile) may view the current sslvpn web portal session info,...
Dec 08, 2017 Risk IR Number: FG-IR-17-172