Denial of service in Cisco Firepower Management Center

1) Improper input validation

EUVDB-ID: #VU8699

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-12244

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper input validation of the fields in the IPv6 extension header packet in the detection engine. A remote attacker can send a specially crafted IPv6 packet to the detection engine, trigger high CPU utilization and cause the Snort process to restart.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

The vulnerability is addressed in the following versions: 6.2.0.2 or 6.1.0.3.

Vulnerable software versions

Cisco Firepower Management Center: 6.0.0 - 6.2.2

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171004-fpsnort

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.