SB2019022210 - Denial of service in Cisco Firepower Threat Defense

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Main Vulnerability Database SB2019022210

SB2019022210 - Denial of service in Cisco Firepower Threat Defense

Published: February 22, 2019

Security Bulletin ID SB2019022210
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Input validation error (CVE-ID: CVE-2019-1691)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green


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.

References