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Vulnerability CVE-2021-34761
Published: 2021-10-27
Description: |
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. |
Type:
CWE-20 (Improper Input Validation)
CVSS2 => (AV:L/AC:L/Au:N/C:N/I:C/A:C)
CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
6.6/10 |
9.2/10 |
3.9/10 |
Exploit range |
Attack complexity |
Authentication |
Local |
Low |
No required |
Confidentiality impact |
Integrity impact |
Availability impact |
None |
Complete |
Complete |
References: |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-file-write-SHVcmQVc
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