Vulnerability Monitor

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CVE-2021-34761

A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. The attacker must have administrative credentials on the device. This vulnerability is due to incomplete validation of user input for a specific CLI command. An attacker could exploit this vulnerability by authenticating to the device with administrative privileges and issuing a CLI command with crafted user parameters. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.

Published

2021-10-27T19:15:08.003

Last Modified

2024-11-21T06:11:08.453

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.4 (MEDIUM)

CVSSv2 Vector

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

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

3.9

Impact Score

9.2

Weaknesses
  • Type: Secondary
    CWE-73
  • Type: Primary
    CWE-668
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco firepower_management_center_virtual_appliance 6.2.3 Yes
Application cisco firepower_management_center_virtual_appliance 6.4.0 Yes
Application cisco firepower_management_center_virtual_appliance 6.6.1 Yes
Application cisco firepower_management_center_virtual_appliance 6.7.0 Yes
Application cisco firepower_management_center_virtual_appliance 7.0.0 Yes
Application cisco firepower_management_center_virtual_appliance 7.1.0 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
Application cisco sourcefire_defense_center 6.2.3 Yes
Application cisco sourcefire_defense_center 6.4.0 Yes
Application cisco sourcefire_defense_center 6.6.1 Yes
Application cisco sourcefire_defense_center 6.7.0 Yes
Application cisco sourcefire_defense_center 7.0.0 Yes
Application cisco sourcefire_defense_center 7.1.0 Yes
References