Vulnerability Monitor

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CVE-2019-1687

A vulnerability in the TCP proxy functionality for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to an error in TCP-based packet inspection, which could cause the TCP packet to have an invalid Layer 2 (L2)-formatted header. An attacker could exploit this vulnerability by sending a crafted TCP packet sequence to the targeted device. A successful exploit could allow the attacker to cause a DoS condition.

Published

2019-05-03T15:29:00.837

Last Modified

2024-11-21T04:37:06.050

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-20
  • Type: Primary
    CWE-20
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco adaptive_security_appliance_software < 9.4.4.34 Yes
Operating System cisco adaptive_security_appliance_software < 9.6.4.25 Yes
Operating System cisco adaptive_security_appliance_software < 9.8.4 Yes
Operating System cisco adaptive_security_appliance_software < 9.9.2.50 Yes
Operating System cisco adaptive_security_appliance_software < 9.10.1.17 Yes
Hardware cisco asa_5505 - No
Hardware cisco asa_5510 - No
Hardware cisco asa_5512-x - No
Hardware cisco asa_5515-x - No
Hardware cisco asa_5520 - No
Hardware cisco asa_5525-x - No
Hardware cisco asa_5540 - No
Hardware cisco asa_5545-x - No
Hardware cisco asa_5550 - No
Hardware cisco asa_5555-x - No
Hardware cisco asa_5580 - No
Hardware cisco asa_5585-x - No
Application cisco firepower_threat_defense < 6.2.3.12 Yes
Application cisco firepower_threat_defense < 6.3.0.3 Yes
References