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CVE-2023-31926— Arbitrary File Overwrite using less 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 v9.2.0 之前版本存在安全漏洞，该漏洞源于使用 less 命令可以覆盖系统文件。

CVSS 7.1 · High EPSS 0.16% · P4
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I. Basic Information for CVE-2023-31926

Vulnerability Information
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Vulnerability Title
Arbitrary File Overwrite using less command
Source: CVE Program / CVE List V5
Vulnerability Description
System files could be overwritten using the less command in Brocade Fabric OS before Brocade Fabric OS v9.1.1c and v9.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
权限预留不恰当
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 v9.2.0 之前版本存在安全漏洞，该漏洞源于使用 less 命令可以覆盖系统文件。
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 before Brocade Fabric OS v9.1.1c and v9.2.0 -

II. Public POCs for CVE-2023-31926

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III. Intelligence Information for CVE-2023-31926

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Vendor Advisories for CVE-2023-31926 (1)

Other References for CVE-2023-31926 (1)

IV. Related Vulnerabilities

Same product: Fabric OS
Same vendor: Brocade
Same weakness: CWE-281

V. Comments for CVE-2023-31926

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