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CVE-2021-27793

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aaa tacacs+ 中的间歇性授权失败。该漏洞可能导致具有有效帐户的用户无法登录交换机。以下产品和版本受到影响：Brocade Fabric OS v9.0.1b 和 9.0.0 之后、Brocade Fabric OS v8.2.3a 和 v8.2.0 之后。

AI Predicted 4.3 Difficulty: Trivial EPSS 0.91% · P58

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force
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I. Basic Information for CVE-2021-27793

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
ntermittent authorization failure in aaa tacacs+ with Brocade Fabric OS versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also in Brocade Fabric OS before Brocade Fabric OS v8.2.3a and after v8.2.0 could cause a user with a valid account to be unable to log into the switch.
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aaa tacacs+ 中的间歇性授权失败。该漏洞可能导致具有有效帐户的用户无法登录交换机。以下产品和版本受到影响：Brocade Fabric OS v9.0.1b 和 9.0.0 之后、Brocade Fabric OS v8.2.3a 和 v8.2.0 之后。
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 Versions before Brocade Fabric OS v9.0.1b and after 9.0.0, also before Brocade Fabric OS v8.2.3a and after v8.2.0 -

II. Public POCs for CVE-2021-27793

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III. Intelligence Information for CVE-2021-27793

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Vendor Advisories for CVE-2021-27793 (1)

Other References for CVE-2021-27793 (1)

Same Patch Batch · n/a · 2021-08-12 · 58 CVEs total

CVE-2020-20975 Gxlcms SQL注入漏洞
CVE-2020-28165 Nature Easy Soft Network Technology ZenTao 代码问题漏洞
CVE-2021-38592 Wasm3 缓冲区错误漏洞
CVE-2021-37222 RCDCAP 安全漏洞
CVE-2020-24576 Netskope Client 安全漏洞
CVE-2020-22403 express-cart 跨站请求伪造漏洞
CVE-2021-27790 Brocade Fabric OS 缓冲区错误漏洞
CVE-2021-27791 Brocade Fabric OS 缓冲区错误漏洞
CVE-2021-35955 Contao 跨站脚本漏洞
CVE-2021-20314 libspf2 缓冲区错误漏洞
CVE-2021-38597 wolfSSL 数据伪造问题漏洞
CVE-2020-20977 UK CMS 跨站脚本漏洞
CVE-2020-20979 LJCMS 代码问题漏洞
CVE-2020-20981 Metinfo MetInfo SQL注入漏洞
CVE-2021-38599 WAL-G 代码问题漏洞
CVE-2021-38604 GNU C Library 代码问题漏洞
CVE-2021-38606 reNgine 安全特征问题漏洞
CVE-2020-18445 YUNUCMS 跨站脚本漏洞
CVE-2020-18446 YUNUCMS 跨站脚本漏洞
CVE-2020-18449 UKCMS 跨站脚本漏洞

Showing top 20 of 58 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

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

V. Comments for CVE-2021-27793

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