Vulnerability Monitor

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CVE-2021-40117

A vulnerability in SSL/TLS message handler for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because incoming SSL/TLS packets are not properly processed. An attacker could exploit this vulnerability by sending a crafted SSL/TLS packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

Published

2021-10-27T19:15:08.770

Last Modified

2024-11-21T06:23:36.370

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.6 (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-119
  • Type: Primary
    CWE-400
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco adaptive_security_appliance < 9.8.4.40 Yes
Application cisco firepower_threat_defense < 6.2.3.17 Yes
Application cisco firepower_threat_defense < 6.4.0.13 Yes
Application cisco firepower_threat_defense < 6.6.5 Yes
Application cisco firepower_threat_defense < 6.7.0.3 Yes
Application cisco firepower_threat_defense < 7.0.1 Yes
Operating System cisco adaptive_security_appliance_software < 9.12.4.26 Yes
Operating System cisco adaptive_security_appliance_software < 9.14.3.9 Yes
Operating System cisco adaptive_security_appliance_software < 9.15.1.17 Yes
Operating System cisco adaptive_security_appliance_software < 9.16.2.3 Yes
Operating System cisco asa_5512-x_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5512-x_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5512-x - No
Operating System cisco asa_5505_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5505_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5505 - No
Operating System cisco asa_5515-x_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5515-x_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5515-x - No
Operating System cisco asa_5525-x_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5525-x_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5525-x - No
Operating System cisco asa_5545-x_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5545-x_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5545-x - No
Operating System cisco asa_5555-x_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5555-x_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5555-x - No
Operating System cisco asa_5580_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5580_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5580 - No
Operating System cisco asa_5585-x_firmware 009.009\(002.085\) Yes
Operating System cisco asa_5585-x_firmware 009.014\(002.106\) Yes
Hardware cisco asa_5585-x - No
References