SB2019071027 - Denial of service in Cisco ASA

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Main Vulnerability Database SB2019071027

SB2019071027 - Denial of service in Cisco ASA

Published: July 10, 2019 Updated: July 18, 2019

Security Bulletin ID SB2019071027
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Resource exhaustion (CVE-ID: CVE-2019-1873)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incomplete input validation of a Secure Sockets Layer (SSL) or Transport Layer Security (TLS) ingress packet header. A remote attacker can send a specially crafted TLS/SSL packet to an interface on the targeted device, cause the device to reload and perform a denial of service (DoS) attack.

This vulnerability affects the following products if they are running a vulnerable release of Cisco ASA Software or FTD Software:

  • ASA 5506-X
  • ASA 5506-X with FirePOWER Services
  • ASA 5506H-X
  • ASA 5506H-X with FirePOWER Services
  • ASA 5506W-X
  • ASA 5506W-X with FirePOWER Services
  • ASA 5508-X
  • ASA 5508-X with FirePOWER Services
  • ASA 5516-X
  • ASA 5516-X with FirePOWER Services


Remediation

Install update from vendor's website.

References