CVE-2017-3885 Denial of service in Cisco Firepower Detection Engine
Remote attackers can cause denial of service in Cisco Firepower by triggering high CPU usage in the SSL reassembly engine when decryption rules are configured.
- 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-2017-3885?
CVE-2017-3885 is a medium-severity denial of service vulnerability in Cisco Secure Firewall Management Center, published on 7 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the detection engine reassembly of Secure Sockets Layer (SSL) packets for Cisco Firepower System Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition because the Snort process consumes a high level of CPU resources. Affected Products: This vulnerability affects Cisco Firepower System Software running software releases 6.0.0, 6.1.0, 6.2.0, or 6.2.1 when the device is configured with an SSL policy that has at least one rule specifying traffic decryption. More Information: CSCvc58563. Known Affected Releases: 6.0.0 6.1.0 6.2.0 6.2.1.
Weakness: CWE-400
Which versions are affected by CVE-2017-3885?
It affects 1 product.
Products include Cisco Secure Firewall Management Center.
How do I fix CVE-2017-3885?
No fix has been published for CVE-2017-3885 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-2017-3885 being exploited?
There is no known exploitation of CVE-2017-3885 in the wild and no public exploit code.
Other vulnerabilities in Cisco Secure Firewall Management Center
- CVE-2026-20079 Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel
- CVE-2026-20131 Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data
- CVE-2026-20316 Cisco Secure Firewall Management Center Use of Hard-coded Password
- CVE-2025-20265 Cisco Secure Firewall Management Center Software Radius Remote Code Execution Vulnerability
- CVE-2024-20424 Command injection in Cisco Firepower Management Center
Sources
Also known as GHSA-96h7-mg93-6889.