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.
5.8	$0-$5k	0.00

A vulnerability has been found in Cisco IOS XE 3.16S/3.17S/3.18.0S/3.18.0SP/3.18.1S on cBR-8 (Router Operating System) and classified as critical. Affected by this vulnerability is an unknown code block of the component vty Configuration. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect integrity.

The weakness was presented 10/12/2016 with Cisco as cisco-sa-20161012-cbr-8 / CSCuz62815 as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2016-6438 since 07/26/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 93518†) and SecurityTracker (ID 1037003†).

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

Version

• 3.16S
• 3.17S
• 3.18.0S
• 3.18.0SP
• 3.18.1S

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: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

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

OpenVAS ID: 103403
OpenVAS Name: Cisco cBR-8 Converged Broadband Router vty Integrity Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/26/2016 🔍
10/12/2016 +78 days 🔍
10/12/2016 +0 days 🔍
10/13/2016 +1 days 🔍
10/14/2016 +1 days 🔍
10/27/2016 +13 days 🔍
09/26/2022 +2160 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20161012-cbr-8 / CSCuz62815
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-6438 (🔍)
OVAL: 🔍

SecurityFocus: 93518 - Cisco IOS XE Software CVE-2016-6438 Remote Security Bypass Vulnerability
SecurityTracker: 1037003

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

Entryinfo

Created: 10/14/2016 11:46 AM
Updated: 09/26/2022 09:18 AM
Changes: 10/14/2016 11:46 AM (63), 05/09/2019 02:49 PM (13), 09/26/2022 09:18 AM (3)
Complete: 🔍
Cache ID: 18:7CE:40

Discussion

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