Vulnerability Monitor

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CVE-2021-34787

A vulnerability in the identity-based firewall (IDFW) rule processing feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass security protections. This vulnerability is due to improper handling of network requests by affected devices configured to use object group search. An attacker could exploit this vulnerability by sending a specially crafted network request to an affected device. A successful exploit could allow the attacker to bypass access control list (ACL) rules on the device, bypass security protections, and send network traffic to unauthorized hosts.

Published

2021-10-27T19:15:08.347

Last Modified

2024-11-21T06:11:12.123

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.3 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

8.6

Impact Score

2.9

Weaknesses
  • Type: Secondary
    CWE-183
  • Type: Primary
    CWE-755
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco adaptive_security_appliance < 9.8.4.40 Yes
Application cisco firepower_threat_defense < 6.4.0.13 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 < 9.12.4.25 Yes
Operating System cisco adaptive_security_appliance_software < 9.14.3.1 Yes
Operating System cisco adaptive_security_appliance_software < 9.15.1.17 Yes
Operating System cisco adaptive_security_appliance_software < 9.16.1.28 Yes
Operating System cisco asa_5512-x_firmware 009.009 Yes
Operating System cisco asa_5512-x_firmware 009.012 Yes
Hardware cisco asa_5512-x - No
Operating System cisco asa_5505_firmware 009.009 Yes
Operating System cisco asa_5505_firmware 009.012 Yes
Hardware cisco asa_5505 - No
Operating System cisco asa_5515-x_firmware 009.009 Yes
Operating System cisco asa_5515-x_firmware 009.012 Yes
Hardware cisco asa_5515-x - No
Operating System cisco asa_5525-x_firmware 009.009 Yes
Operating System cisco asa_5525-x_firmware 009.012 Yes
Hardware cisco asa_5525-x - No
Operating System cisco asa_5545-x_firmware 009.009 Yes
Operating System cisco asa_5545-x_firmware 009.012 Yes
Hardware cisco asa_5545-x - No
Operating System cisco asa_5555-x_firmware 009.009 Yes
Operating System cisco asa_5555-x_firmware 009.012 Yes
Hardware cisco asa_5555-x - No
Operating System cisco asa_5580_firmware 009.009 Yes
Operating System cisco asa_5580_firmware 009.012 Yes
Hardware cisco asa_5580 - No
Operating System cisco asa_5585-x_firmware 009.009 Yes
Operating System cisco asa_5585-x_firmware 009.012 Yes
Hardware cisco asa_5585-x - No
References