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CVE-2021-27796

Quick assessment

Affected
n/a Brocade Fabric OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Brocade Fabric OS（FOS）是美国博科（Brocade）公司的一套使用在交换机和路由器等设备中的嵌入式操作系统。 Brocade Fabric OS 存在安全漏洞，该漏洞源于通过rbash读取Brocade Fabric OS文件，以获取敏感信息。

AI Predicted 4.4 Difficulty: Easy EPSS 0.91% · P59
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I. Basic Information for CVE-2021-27796

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Brocade Fabric OS versions before Brocade Fabric OS v8.0.1b, v7.4.1d could allow an authenticated attacker within the restricted shell environment (rbash) as either the “user” or “factory” account, to read the contents of any file on the filesystem utilizing one of a few available binaries.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Brocade Fabric OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Brocade Fabric OS（FOS）是美国博科（Brocade）公司的一套使用在交换机和路由器等设备中的嵌入式操作系统。 Brocade Fabric OS 存在安全漏洞，该漏洞源于通过rbash读取Brocade Fabric OS文件，以获取敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Brocade Fabric OS Brocade Fabric OS versions before Brocade Fabric OS v8.0.1b, v7.4.1d -

II. Public POCs for CVE-2021-27796

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III. Intelligence Information for CVE-2021-27796

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Other References for CVE-2021-27796 (1)

Same Patch Batch · n/a · 2022-02-21 · 12 CVEs total

CVE-2022-25297 7.5 HIGH Arbitrary File Write
CVE-2021-4115 polkit 安全漏洞
CVE-2021-44141 samba 后置链接漏洞
CVE-2022-0563 util-linux 安全漏洞
CVE-2021-45008 Plesk Cms 访问控制错误漏洞
CVE-2022-24553 Zfaka 代码问题漏洞
CVE-2021-44568 libsolv 缓冲区错误漏洞
CVE-2021-27753 HCL Sametime 路径遍历漏洞
CVE-2021-27755 HCL Sametime 安全漏洞
CVE-2021-27797 Brocade Fabric OS 信任管理问题漏洞
CVE-2022-24564 Checkmk 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: Brocade Fabric OS
Same vendor: n/a

V. Comments for CVE-2021-27796

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