Security restrictions bypass in Cisco Firepower Management

1) Security restrictions bypass

EUVDB-ID: #VU10410

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0138

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in the detection engine of Cisco Firepower System Software due to the affected software does not detect BitTorrent handshake messages correctly. A remote attacker can send a specially crafted BitTorrent connection request and bypass file policies that are configured to block files transmitted to the affected device via the BitTorrent protocol.

Mitigation

Update to version 6.1.0.6.

Vulnerable software versions

Cisco Firepower Management Center: 6.1.0 - 6.2.3

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-fss

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.