Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0 Proxy Service privileges 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 (≈)
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

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. This impacts an unknown function of the component Proxy Service. The manipulation leads to privileges management. This vulnerability is listed as CVE-2018-6440. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Brocade Fabric OS up to 7.4.2c/8.0.2e/8.1.2e/8.2.0. This issue affects an unknown code block of the component Proxy Service. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the proxy service of Brocade Fabric OS versions before 8.2.1, 8.1.2f, 8.0.2f, 7.4.2d could allow remote unauthenticated attackers to obtain sensitive information and possibly cause a denial of service attack.

The bug was discovered 10/29/2018. The weakness was presented 12/03/2018 (Website). The advisory is shared at broadcom.com. The identification of this vulnerability is CVE-2018-6440 since 01/31/2018. The attack may be initiated remotely. No form of authentication is needed for a successful 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 35 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.

See VDB-127432 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.1
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: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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 🔍
12/03/2018 +35 days 🔍
12/03/2018 +0 days 🔍
12/04/2018 +1 days 🔍
04/17/2020 +500 days 🔍

Sourcesinfo

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

CVE: CVE-2018-6440 (🔍)
GCVE (CVE): GCVE-0-2018-6440
GCVE (VulDB): GCVE-100-127433
See also: 🔍

Entryinfo

Created: 12/04/2018 07:40
Updated: 04/17/2020 08:33
Changes: 12/04/2018 07:40 (60), 04/17/2020 08:33 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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