VDB-193603 · CVE-2021-27796 · GCVE-0-2021-27796

Brocade Fabric OS prior 7.4.1d/8.0.1b rbash information disclosure

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.
3.4	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Brocade Fabric OS. This vulnerability affects unknown code of the component rbash. This manipulation causes information disclosure. This vulnerability appears as CVE-2021-27796. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Brocade Fabric OS and classified as problematic. Affected by this vulnerability is an unknown code of the component rbash. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality.

The weakness was presented 02/21/2022. It is possible to read the advisory at broadcom.com. This vulnerability is known as CVE-2021-27796 since 02/26/2021. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 7.4.1d or 8.0.1b eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Brocade

Name

Fabric OS

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: Fabric OS 7.4.1d/8.0.1b

Timelineinfo

02/26/2021 🔍
02/21/2022 +360 days 🔍
02/21/2022 +0 days 🔍
02/25/2022 +4 days 🔍

Sourcesinfo

Advisory: broadcom.com
Status: Confirmed

CVE: CVE-2021-27796 (🔍)
GCVE (CVE): GCVE-0-2021-27796
GCVE (VulDB): GCVE-100-193603

Entryinfo

Created: 02/21/2022 21:29
Updated: 02/25/2022 12:48
Changes: 02/21/2022 21:29 (31), 02/21/2022 21:30 (10), 02/25/2022 12:41 (1), 02/25/2022 12:48 (1)
Complete: 🔍
Cache ID: 216::103