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CVE-2023-31425— Privilege escalation via the fosexec command

Quick assessment

Affected
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 9.1.0至9.1.1版本存在安全漏洞，该漏洞源于fosexec命令存在权限提升漏洞。攻击者可利用该漏洞通过破坏rbash shell来将权限提升到root。

CVSS 7.8 · High EPSS 0.27% · P18
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I. Basic Information for CVE-2023-31425

Vulnerability Information
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Vulnerability Title
Privilege escalation via the fosexec command
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the fosexec command of Brocade Fabric OS after Brocade Fabric OS v9.1.0 and, before Brocade Fabric OS v9.1.1 could allow a local authenticated user to perform privilege escalation to root by breaking the rbash shell. Starting with Fabric OS v9.1.0, “root” account access is disabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Brocade Fabric OS 操作系统命令注入漏洞
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 9.1.0至9.1.1版本存在安全漏洞，该漏洞源于fosexec命令存在权限提升漏洞。攻击者可利用该漏洞通过破坏rbash shell来将权限提升到root。
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 after Brocade Fabric OS v9.1.0 and, before Brocade Fabric OS v9.1.1 -

II. Public POCs for CVE-2023-31425

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III. Intelligence Information for CVE-2023-31425

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Vendor Advisories for CVE-2023-31425 (1)

Other References for CVE-2023-31425 (1)

Same Patch Batch · Brocade · 2023-08-01 · 9 CVEs total

CVE-2023-31427 7.8 HIGH Knowledge of full path name
CVE-2023-31432 7.8 HIGH Privilege issues in multiple commands
CVE-2023-31426 6.8 MEDIUM scp, sftp, ftp servers passwords in supportsave
CVE-2023-31928 6.3 MEDIUM XSS vulnerability in Brocade Webtools
CVE-2023-31429 5.5 MEDIUM Multiple commands print sensitive information in the terminal
CVE-2023-31431 5.5 MEDIUM A buffer overflow vulnerability in “diagstatus” command
CVE-2023-31430 5.5 MEDIUM buffer overflow vulnerability in “secpolicydelete” command
CVE-2023-31428 5.5 MEDIUM CLI allows upload or transfer files of dangerous types

IV. Related Vulnerabilities

Same product: Fabric OS
Same vendor: Brocade

V. Comments for CVE-2023-31425

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