Vulnerability identifier: #VU6718

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6674

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Firepower Management Center
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote unauthenticated attacker to bypass URL filters on the target system.

The weakness exists in the feature-license management functionality of Cisco Firepower System Software due to insufficient validation of user-supplied input. A remote attacker can send traffic matching a configured URL filter and bypass URL filters to access certain websites.

Successful exploitation of the vulnerability results in access to the website.

Mitigation
Update to version 6.1.0.2, 6.2.1, 6.2.0.1.

Vulnerable software versions

Cisco Firepower Management Center: 6.0.1 - 6.2.1

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170524-fmc

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.