Cisco Firepower Threat Defense Software 6.2.3/6.4.0.6/6.6.0.1 CLI argument injection

Summaryinfo

A vulnerability has been found in Cisco Firepower Threat Defense Software 6.2.3/6.4.0.6/6.6.0.1 and classified as critical. Affected by this issue is some unknown functionality of the component CLI. This manipulation causes argument injection. This vulnerability is handled as CVE-2021-34752. It is possible to launch the attack on the local host. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Cisco Firepower Threat Defense Software 6.2.3/6.4.0.6/6.6.0.1 and classified as critical. Affected by this vulnerability is an unknown part of the component CLI. The manipulation with an unknown input leads to a argument injection vulnerability. The CWE definition for the vulnerability is CWE-88. The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the CLI of Cisco FTD Software could allow an authenticated, local attacker with administrative privileges to execute arbitrary commands with root privileges on the underlying operating system of an affected device.  This vulnerability is due to insufficient validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input to the affected commands. A successful exploit could allow the attacker to execute commands with root privileges on the underlying operating system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

It is possible to read the advisory at sec.cloudapps.cisco.com. This vulnerability is known as CVE-2021-34752 since 06/15/2021. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/15/2024). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• Firepower Threat Defense Software

Version

• 6.2.3
• 6.4.0.6
• 6.6.0.1

License

• commercial

Website

• Vendor: https://www.cisco.com/

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