Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-1422

A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.

Published

2021-07-16T13:15:08.783

Last Modified

2024-11-21T05:44:19.693

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.7 (HIGH)

CVSSv2 Vector

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

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

8.0

Impact Score

6.9

Weaknesses
  • Type: Secondary
    CWE-617
  • Type: Primary
    CWE-617
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco adaptive_security_appliance_software 9.16.1 Yes
Operating System cisco firepower_threat_defense 7.0.0.0 Yes
Application cisco adaptive_security_virtual_appliance - No
Hardware cisco firepower_2100 - No
Hardware cisco firepower_2110 - No
Hardware cisco firepower_2120 - No
Hardware cisco firepower_2130 - No
Hardware cisco firepower_2140 - No
Hardware cisco ftd_virtual - No
References