CVE-2018-0254 : A vulnerability in the detection engine of Cisco Firepower System Software could

A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass configured file action policies if an Intelligent Application Bypass (IAB) with a drop percentage threshold is also configured. The vulnerability is due to incorrect counting of the percentage of dropped traffic. An attacker could exploit this vulnerability by sending network traffic to a targeted device. An exploit could allow the attacker to bypass configured file action policies, and traffic that should be dropped could be allowed into the network. Cisco Bug IDs: CSCvf86435.

Published 2018-04-19 20:29:01

Updated 2019-10-09 23:31:35

Source Cisco Systems, Inc.

View at NVD, CVE.org

Products affected by CVE-2018-0254

Cisco » Firepower Threat Defense » Version: 6.2.2
cpe:2.3:a:cisco:firepower_threat_defense:6.2.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Amp 7150 » Version: N/A
When used together with: Cisco » Amp 8150 » Version: N/A
When used together with: Cisco » Firepower Appliance 7010 » Version: N/A
When used together with: Cisco » Firepower Appliance 7020 » Version: N/A
When used together with: Cisco » Firepower Appliance 7030 » Version: N/A
When used together with: Cisco » Firepower Appliance 7050 » Version: N/A
When used together with: Cisco » Firepower Appliance 7110 » Version: N/A
When used together with: Cisco » Firepower Appliance 7115 » Version: N/A
When used together with: Cisco » Firepower Appliance 7120 » Version: N/A
When used together with: Cisco » Firepower Appliance 7125 » Version: N/A
When used together with: Cisco » Firepower Appliance 8120 » Version: N/A
When used together with: Cisco » Firepower Appliance 8130 » Version: N/A
When used together with: Cisco » Firepower Appliance 8140 » Version: N/A
When used together with: Cisco » Firepower Appliance 8250 » Version: N/A
When used together with: Cisco » Firepower Appliance 8260 » Version: N/A
When used together with: Cisco » Firepower Appliance 8270 » Version: N/A
When used together with: Cisco » Firepower Appliance 8290 » Version: N/A
When used together with: Cisco » Firepower Appliance 8350 » Version: N/A
When used together with: Cisco » Firepower Appliance 8360 » Version: N/A
When used together with: Cisco » Firepower Appliance 8370 » Version: N/A
When used together with: Cisco » Firepower Appliance 8390 » Version: N/A
When used together with: Cisco » Firepower Management Center 1000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2500 » Version: N/A
When used together with: Cisco » Firepower Management Center 4000 » Version: N/A
When used together with: Cisco » Firepower Management Center 4500 » Version: N/A
When used together with: Cisco » Firesight Management Center 1500 » Version: N/A
When used together with: Cisco » Firesight Management Center 3500 » Version: N/A
When used together with: Cisco » Firesight Management Center 750 » Version: N/A
When used together with: Cisco » Ngips Virtual Appliance » Version: N/A
Cisco » Firepower Threat Defense » Version: 6.2.1
cpe:2.3:a:cisco:firepower_threat_defense:6.2.1:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Amp 7150 » Version: N/A
When used together with: Cisco » Amp 8150 » Version: N/A
When used together with: Cisco » Firepower Appliance 7010 » Version: N/A
When used together with: Cisco » Firepower Appliance 7020 » Version: N/A
When used together with: Cisco » Firepower Appliance 7030 » Version: N/A
When used together with: Cisco » Firepower Appliance 7050 » Version: N/A
When used together with: Cisco » Firepower Appliance 7110 » Version: N/A
When used together with: Cisco » Firepower Appliance 7115 » Version: N/A
When used together with: Cisco » Firepower Appliance 7120 » Version: N/A
When used together with: Cisco » Firepower Appliance 7125 » Version: N/A
When used together with: Cisco » Firepower Appliance 8120 » Version: N/A
When used together with: Cisco » Firepower Appliance 8130 » Version: N/A
When used together with: Cisco » Firepower Appliance 8140 » Version: N/A
When used together with: Cisco » Firepower Appliance 8250 » Version: N/A
When used together with: Cisco » Firepower Appliance 8260 » Version: N/A
When used together with: Cisco » Firepower Appliance 8270 » Version: N/A
When used together with: Cisco » Firepower Appliance 8290 » Version: N/A
When used together with: Cisco » Firepower Appliance 8350 » Version: N/A
When used together with: Cisco » Firepower Appliance 8360 » Version: N/A
When used together with: Cisco » Firepower Appliance 8370 » Version: N/A
When used together with: Cisco » Firepower Appliance 8390 » Version: N/A
When used together with: Cisco » Firepower Management Center 1000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2500 » Version: N/A
When used together with: Cisco » Firepower Management Center 4000 » Version: N/A
When used together with: Cisco » Firepower Management Center 4500 » Version: N/A
When used together with: Cisco » Firesight Management Center 1500 » Version: N/A
When used together with: Cisco » Firesight Management Center 3500 » Version: N/A
When used together with: Cisco » Firesight Management Center 750 » Version: N/A
When used together with: Cisco » Ngips Virtual Appliance » Version: N/A
Cisco » Firepower Threat Defense » Version: 6.2.0.2
cpe:2.3:a:cisco:firepower_threat_defense:6.2.0.2:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Amp 7150 » Version: N/A
When used together with: Cisco » Amp 8150 » Version: N/A
When used together with: Cisco » Firepower Appliance 7010 » Version: N/A
When used together with: Cisco » Firepower Appliance 7020 » Version: N/A
When used together with: Cisco » Firepower Appliance 7030 » Version: N/A
When used together with: Cisco » Firepower Appliance 7050 » Version: N/A
When used together with: Cisco » Firepower Appliance 7110 » Version: N/A
When used together with: Cisco » Firepower Appliance 7115 » Version: N/A
When used together with: Cisco » Firepower Appliance 7120 » Version: N/A
When used together with: Cisco » Firepower Appliance 7125 » Version: N/A
When used together with: Cisco » Firepower Appliance 8120 » Version: N/A
When used together with: Cisco » Firepower Appliance 8130 » Version: N/A
When used together with: Cisco » Firepower Appliance 8140 » Version: N/A
When used together with: Cisco » Firepower Appliance 8250 » Version: N/A
When used together with: Cisco » Firepower Appliance 8260 » Version: N/A
When used together with: Cisco » Firepower Appliance 8270 » Version: N/A
When used together with: Cisco » Firepower Appliance 8290 » Version: N/A
When used together with: Cisco » Firepower Appliance 8350 » Version: N/A
When used together with: Cisco » Firepower Appliance 8360 » Version: N/A
When used together with: Cisco » Firepower Appliance 8370 » Version: N/A
When used together with: Cisco » Firepower Appliance 8390 » Version: N/A
When used together with: Cisco » Firepower Management Center 1000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2500 » Version: N/A
When used together with: Cisco » Firepower Management Center 4000 » Version: N/A
When used together with: Cisco » Firepower Management Center 4500 » Version: N/A
When used together with: Cisco » Firesight Management Center 1500 » Version: N/A
When used together with: Cisco » Firesight Management Center 3500 » Version: N/A
When used together with: Cisco » Firesight Management Center 750 » Version: N/A
When used together with: Cisco » Ngips Virtual Appliance » Version: N/A
Cisco » Firepower Threat Defense » Version: 6.1.0.5
cpe:2.3:a:cisco:firepower_threat_defense:6.1.0.5:*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Amp 7150 » Version: N/A
When used together with: Cisco » Amp 8150 » Version: N/A
When used together with: Cisco » Firepower Appliance 7010 » Version: N/A
When used together with: Cisco » Firepower Appliance 7020 » Version: N/A
When used together with: Cisco » Firepower Appliance 7030 » Version: N/A
When used together with: Cisco » Firepower Appliance 7050 » Version: N/A
When used together with: Cisco » Firepower Appliance 7110 » Version: N/A
When used together with: Cisco » Firepower Appliance 7115 » Version: N/A
When used together with: Cisco » Firepower Appliance 7120 » Version: N/A
When used together with: Cisco » Firepower Appliance 7125 » Version: N/A
When used together with: Cisco » Firepower Appliance 8120 » Version: N/A
When used together with: Cisco » Firepower Appliance 8130 » Version: N/A
When used together with: Cisco » Firepower Appliance 8140 » Version: N/A
When used together with: Cisco » Firepower Appliance 8250 » Version: N/A
When used together with: Cisco » Firepower Appliance 8260 » Version: N/A
When used together with: Cisco » Firepower Appliance 8270 » Version: N/A
When used together with: Cisco » Firepower Appliance 8290 » Version: N/A
When used together with: Cisco » Firepower Appliance 8350 » Version: N/A
When used together with: Cisco » Firepower Appliance 8360 » Version: N/A
When used together with: Cisco » Firepower Appliance 8370 » Version: N/A
When used together with: Cisco » Firepower Appliance 8390 » Version: N/A
When used together with: Cisco » Firepower Management Center 1000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2000 » Version: N/A
When used together with: Cisco » Firepower Management Center 2500 » Version: N/A
When used together with: Cisco » Firepower Management Center 4000 » Version: N/A
When used together with: Cisco » Firepower Management Center 4500 » Version: N/A
When used together with: Cisco » Firesight Management Center 1500 » Version: N/A
When used together with: Cisco » Firesight Management Center 3500 » Version: N/A
When used together with: Cisco » Firesight Management Center 750 » Version: N/A
When used together with: Cisco » Ngips Virtual Appliance » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2018-0254

EPSS FAQ

0.09%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 39 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-0254

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:P/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
5.3	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N	3.9	1.4	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: Low Availability: None

CWE ids for CVE-2018-0254

CWE-693 Protection Mechanism Failure

The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)

References for CVE-2018-0254

http://www.securityfocus.com/bid/103940

Cisco Firepower System Software CVE-2018-0254 Remote Security Bypass Vulnerability
Third Party Advisory;VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-fss2

Cisco Firepower System Software Intelligent Application Bypass Vulnerability
Vendor Advisory

Jump to

Vulnerability Details : CVE-2018-0254

Products affected by CVE-2018-0254

Exploit prediction scoring system (EPSS) score for CVE-2018-0254

CVSS scores for CVE-2018-0254

CWE ids for CVE-2018-0254

References for CVE-2018-0254