Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0 Secure Shell Environment Variable access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0. Affected by this issue is some unknown functionality of the component Secure Shell. The manipulation as part of Environment Variable results in access control. This vulnerability is known as CVE-2018-6441. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0. It has been classified as critical. Affected is an unknown code block of the component Secure Shell. The manipulation as part of a Environment Variable leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in Secure Shell implementation of Brocade Fabric OS versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow a local attacker to provide arbitrary environment variables, and bypass the restricted configuration shell.

The bug was discovered 10/29/2018. The weakness was published 11/08/2018 (Website). The advisory is shared for download at broadcom.com. This vulnerability is traded as CVE-2018-6441 since 01/31/2018. The attack needs to be approached locally. The requirement for exploitation is a authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 7.4.2d, 8.0.2f, 8.1.2f or 8.2.1 eliminates this vulnerability.

Similar entries are available at VDB-126601, VDB-126599, VDB-126598 and VDB-126597. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Fabric OS 7.4.2d/8.0.2f/8.1.2f/8.2.1

Timelineinfo

01/31/2018 🔍
10/29/2018 +271 days 🔍
11/08/2018 +10 days 🔍
11/08/2018 +0 days 🔍
11/09/2018 +1 days 🔍
04/11/2020 +519 days 🔍

Sourcesinfo

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

CVE: CVE-2018-6441 (🔍)
GCVE (CVE): GCVE-0-2018-6441
GCVE (VulDB): GCVE-100-126600
See also: 🔍

Entryinfo

Created: 11/09/2018 07:44
Updated: 04/11/2020 09:53
Changes: 11/09/2018 07:44 (61), 04/11/2020 09:53 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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