CVE-2017-6625 Denial of service in Cisco Firepower Threat Defense and Cisco ASA with FirePOWER Module

High 7.1 Published Updated

An authenticated remote attacker can cause a denial of service by sending crafted packets to systems with SSL policy enabled.

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

What is CVE-2017-6625?

CVE-2017-6625 is a high-severity denial of service vulnerability in Cisco Secure Firewall Threat Defense, published on 3 May 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A "Cisco Firepower Threat Defense 6.0.0 through 6.2.2 and Cisco ASA with FirePOWER Module Denial of Service" vulnerability in the access control policy of Cisco Firepower System Software could allow an authenticated, remote attacker to cause an affected system to stop inspecting and processing packets, resulting in a denial of service (DoS) condition. The vulnerability is due to improper SSL policy handling by the affected software when packets are passed through the sensing interfaces of an affected system. An attacker could exploit this vulnerability by sending crafted packets through a targeted system. This vulnerability affects Cisco Firepower System Software that is configured with the SSL policy feature. Cisco Bug IDs: CSCvc84361.

Weakness: CWE-399

Which versions are affected by CVE-2017-6625?

It affects 1 product.

Products include Cisco Secure Firewall Threat Defense.

How do I fix CVE-2017-6625?

No fix has been published for CVE-2017-6625 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-6625 being exploited?

There is no known exploitation of CVE-2017-6625 in the wild and no public exploit code.

All Cisco Secure Firewall Threat Defense vulnerabilities

Sources

Also known as GHSA-97f5-2h76-3gpr.

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