SB2019022210 - Denial of service in Cisco Firepower Threat Defense
Published: February 22, 2019
Security Bulletin ID
SB2019022210
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2019-1691)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the detection engine due to the incomplete error handling of the SSL or TLS packet header during the connection establishment. A remote attacker can send a specially crafted SSL or TLS packet during the connection handshake and cause the SNORT detection engine to unexpectedly restart, resulting in a partial DoS condition while the detection engine restarts.
Remediation
Install update from vendor's website.