Cisco Firepower Threat Defense
CVE-2017-6632
A vulnerability in the logging configuration of Secure Sockets Layer (SSL) policies for Cisco FirePOWER System Software 5.3.0 through 6.2.2 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to high consumption of system resources. The vulnerability is due to the logging of certain TCP packets by the affected software. An attacker could exploit this vulnerability by sending a flood of crafted TCP packets to an affected device. A successful exploit could allow the attacker to cause a DoS condition. The success of an exploit is dependent on how an administrator has configured logging for SSL policies for a device. This vulnerability affects Cisco FirePOWER System Software that is configured to log connections by using SSL policy default actions. Cisco Bug IDs: CSCvd07072.
What this means for your business
- It affects Cisco Firepower Threat Defense. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 2% chance of attack attempts being seen in the next 30 days, ranking above 83% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Cisco Firepower Threat Defense, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 7.5 (v3.0)
- Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-399
- Assigned by
- psirt@cisco.com
Dates
- Published
- 2017-05-22
- Last modified
- 2026-08-11
- Sources
- NVD
Affected products
- Cisco Firepower Threat Defense6.2 base
- Cisco Secure Firewall Threat Defense5.3.0, 5.4.0, 6.0.0, 6.0.1, 6.0.1.3, 6.1.0, 6.1.0.2, 6.2.0, 6.2.1, 6.2.2
As listed in the NVD configuration data. Not a statement about your estate.