VDB-113039 · CVE-2017-6227 · GCVE-0-2017-6227

Brocade Fibre Channel SAN up to 7.4.2/8.1.1 IPv6 Stack Messages resource management

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Brocade Fibre Channel SAN up to 7.4.2/8.1.1 and classified as problematic. This vulnerability affects unknown code of the component IPv6 Stack. The manipulation as part of Messages leads to resource management. This vulnerability is traded as CVE-2017-6227. Access to the local network is required for this attack to succeed. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Brocade Fibre Channel SAN up to 7.4.2/8.1.1. It has been rated as problematic. This issue affects an unknown part of the component IPv6 Stack. The manipulation as part of a Messages leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability. The summary by CVE is:

A vulnerability in the IPv6 stack on Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) versions before 7.4.2b, 8.1.2 and 8.2.0 could allow an attacker to cause a denial of service (CPU consumption and device hang) condition by sending crafted Router Advertisement (RA) messages to a targeted system.

The bug was discovered 01/17/2018. The weakness was shared 02/08/2018 (Website). It is possible to read the advisory at brocade.com. The identification of this vulnerability is CVE-2017-6227 since 02/23/2017. The exploitation is known to be easy. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 22 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.4.2b, 8.1.2 or 8.2.0 eliminates this vulnerability.

The entry VDB-113038 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Brocade

Name

Fibre Channel SAN

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Fibre Channel SAN 7.4.2b/8.1.2/8.2.0

Timelineinfo

02/23/2017 🔍
01/17/2018 +328 days 🔍
02/08/2018 +22 days 🔍
02/08/2018 +0 days 🔍
02/09/2018 +1 days 🔍
01/03/2020 +693 days 🔍

Sourcesinfo

Advisory: brocade.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-6227 (🔍)
GCVE (CVE): GCVE-0-2017-6227
GCVE (VulDB): GCVE-100-113039
See also: 🔍

Entryinfo

Created: 02/09/2018 08:48
Updated: 01/03/2020 09:47
Changes: 02/09/2018 08:48 (60), 01/03/2020 09:47 (2)
Complete: 🔍
Cache ID: 216::103