CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4	$5k-$25k	0.00

A vulnerability, which was classified as critical, has been found in Cisco IOS and IOS XE (Router Operating System) (the affected version is unknown). This issue affects an unknown code of the component Zone-Based Firewall. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Zone-Based Firewall (ZBFW) functionality in Cisco IOS, possibly 15.4 and earlier, and IOS XE, possibly 3.13 and earlier, mishandles zone checking for existing sessions, which allows remote attackers to bypass intended resource-access restrictions via spoofed traffic that matches one of these sessions, aka Bug IDs CSCun94946 and CSCun96847.

The weakness was published 09/22/2016 with Cisco as CSCun94946 / CSCun96847 as confirmed advisory (Website). The advisory is shared at quickview.cloudapps.cisco.com. The identification of this vulnerability is CVE-2014-2146 since 02/25/2014. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 04/23/2019).

The vulnerability scanner Nessus provides a plugin with the ID 91855 (Cisco IOS-XE Zone-Based Firewall Feature Security Bypass (CSCun96847)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.

Addressing this vulnerability is possible by firewalling . A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91855).

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS
• IOS XE

License

• commercial

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 6.5
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 91855
Nessus Name: Cisco IOS-XE Zone-Based Firewall Feature Security Bypass (CSCun96847)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/25/2014 🔍
05/29/2015 +458 days 🔍
05/29/2015 +0 days 🔍
06/27/2016 +395 days 🔍
09/22/2016 +87 days 🔍
09/22/2016 +0 days 🔍
09/23/2016 +1 days 🔍
04/23/2019 +942 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCun94946 / CSCun96847
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-2146 (🔍)
SecurityFocus: 93126 - Cisco IOS and Cisco IOS XE Software CVE-2014-2146 Security Bypass Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 09/23/2016 09:23
Updated: 04/23/2019 23:00
Changes: 09/23/2016 09:23 (59), 04/23/2019 23:00 (14)
Complete: 🔍

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