What’s Vulnerable › Vulnerabilities

CVE-2018-0138

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-02-08 · updated 2026-08-11
• Weakness: CWE-693

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.

Affected products

• Cisco Firepower Threat Defense Software: 6.1.0, 6.2.0, 6.2.2, 6.2.3

References

• http://www.securityfocus.com/bid/102978
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fss
• http://www.securityfocus.com/bid/102978
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fss

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