CVE-2018-15443 Cisco Firepower Detection Engine TCP Intrusion Prevention System Rule Bypass Vulnerability
An unauthenticated remote attacker can bypass configured Intrusion Prevention System rules by sending crafted TCP traffic, allowing uninspected traffic onto the network.
- 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-2018-15443?
CVE-2018-15443 is a medium-severity vulnerability in Cisco Firepower Management Center, published on 8 Nov 2018. 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 of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion Prevention System (IPS) rule that inspects certain types of TCP traffic. The vulnerability is due to incorrect TCP retransmission handling. An attacker could exploit this vulnerability by sending a crafted TCP connection request through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.
Weakness: CWE-400
Which versions are affected by CVE-2018-15443?
It affects 1 product.
Products include Cisco Firepower System Software.
How do I fix CVE-2018-15443?
No fix has been published for CVE-2018-15443 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-15443 being exploited?
There is no known exploitation of CVE-2018-15443 in the wild and no public exploit code.
Other vulnerabilities in Cisco Firepower Management Center
Sources
Also known as GHSA-r3fv-hxw4-7fj4.