Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0 Command Line Interface access control

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 (≈)
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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.
7.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0. This impacts an unknown function of the component Command Line Interface. Performing a manipulation results in access control. This vulnerability is reported as CVE-2018-6436. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0. This affects some unknown functionality of the component Command Line Interface. The manipulation with an unknown input 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. The summary by CVE is:

A Vulnerability in the firmwaredownload command of Brocade Fabric OS command line interface (CLI) versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow a local attacker to escape the restricted shell and, gain root access.

The bug was discovered 10/29/2018. The weakness was disclosed 11/08/2018 (Website). The advisory is shared at broadcom.com. This vulnerability is uniquely identified as CVE-2018-6436 since 01/31/2018. An attack has to be approached locally. A authentication is required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

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.

The entry VDB-127432 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
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-2018-6436 (🔍)
GCVE (CVE): GCVE-0-2018-6436
GCVE (VulDB): GCVE-100-126597
See also: 🔍

Entryinfo

Created: 11/09/2018 07:44
Updated: 04/11/2020 09:44
Changes: 11/09/2018 07:44 (60), 04/11/2020 09:44 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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