CVE-2018-0138 Security feature bypass in Cisco Firepower System Software
An unauthenticated remote attacker can bypass BitTorrent file blocking policies on Cisco Firepower devices by sending crafted handshake messages.
- 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-2018-0138?
CVE-2018-0138 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense, published on 8 Feb 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 file policies that are configured to block files transmitted to an affected device via the BitTorrent protocol. The vulnerability exists because the affected software does not detect BitTorrent handshake messages correctly. An attacker could exploit this vulnerability by sending a crafted BitTorrent connection request to an affected device. A successful exploit could allow the attacker to bypass file policies that are configured to block files transmitted to the affected device via the BitTorrent protocol. Cisco Bug IDs: CSCve26946.
Weakness: CWE-693
Which versions are affected by CVE-2018-0138?
It affects 1 product.
Products include Cisco Secure Firewall Threat Defense.
How do I fix CVE-2018-0138?
No fix has been published for CVE-2018-0138 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-0138 being exploited?
There is no known exploitation of CVE-2018-0138 in the wild and no public exploit code.
Other vulnerabilities in Cisco Secure Firewall Threat Defense
- CVE-2024-20412 Hardcoded credentials in Cisco Firepower Threat Defense Software
- CVE-2024-20330 Memory corruption in Cisco Firepower Threat Defense Software
- CVE-2024-20339 Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vulnerability
- CVE-2024-20351 Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
- CVE-2023-20083 Denial of service in Cisco Firepower Threat Defense Software
Sources
Also known as GHSA-5qfr-j674-96hc.