CVE-2018-0138
MediumCVSS 5.3Exploitation Probability (EPSS)
Elevated risk64th percentile - higher than 64% of all known CVEs
Summary
A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass file policies configured to block files transmitted via the BitTorrent protocol. The issue is due to incorrect detection of BitTorrent handshake messages. An attacker could exploit this by sending a crafted BitTorrent connection request to an affected device.
Risk Assessment
The organization may be exposed to files that should be blocked, potentially leading to malware infections or security policy violations.
Recommendation
It is recommended to upgrade Cisco Firepower System Software to a patched version.
Original NVD description (English source)
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.