CVE-2016-7541 Security feature bypass in FortiOS

Medium 5.9 Published Updated

Attackers can bypass security policies during IPS updates on FortiGate devices if IPS is configured in flow mode instead of the default proxy mode.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2016-7541?

CVE-2016-7541 is a medium-severity vulnerability in Fortinet Fortios, published on 30 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Long lived sessions in Fortinet FortiGate devices with FortiOS 5.x before 5.4.0 could violate a security policy during IPS signature updates when the FortiGate's IPSengine is configured in flow mode. All FortiGate versions with IPS configured in proxy mode (the default mode) are not affected.

Weakness: CWE-254

Which versions are affected by CVE-2016-7541?

It affects 1 product.

Products include Fortinet Fortios.

How do I fix CVE-2016-7541?

No fix has been published for CVE-2016-7541 yet. Limit exposure of the affected software until one is available.

Is CVE-2016-7541 being exploited?

There is no known exploitation of CVE-2016-7541 in the wild and no public exploit code.

All Fortinet Fortios vulnerabilities

Sources

Also known as GHSA-5qrm-hvcf-q4hg.

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