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CVE-2023-4163— Possible buffer overflow in portcfgfportbuffers in Brocade Fabric OS

Quick assessment

Affected
Brocade 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 v9.2.0a之前版本存在安全漏洞，该漏洞源于本地经过身份验证的特权用户可能会触发缓冲区溢出情况，从而导致 portcfgfportbuffers 命令中的缓冲区大量输入导致内核恐慌。

CVSS 4.4 · Medium EPSS 0.27% · P17

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2023-4163

Vulnerability Information
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Vulnerability Title
Possible buffer overflow in portcfgfportbuffers in Brocade Fabric OS
Source: CVE Program / CVE List V5
Vulnerability Description
In Brocade Fabric OS before v9.2.0a, a local authenticated privileged user can trigger a buffer overflow condition, leading to a kernel panic with large input to buffers in the portcfgfportbuffers command.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
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 v9.2.0a之前版本存在安全漏洞，该漏洞源于本地经过身份验证的特权用户可能会触发缓冲区溢出情况，从而导致 portcfgfportbuffers 命令中的缓冲区大量输入导致内核恐慌。
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 Brocade Fabric OS Fabric OS before v9.2.0a -

II. Public POCs for CVE-2023-4163

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III. Intelligence Information for CVE-2023-4163

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Vendor Advisories for CVE-2023-4163 (1)

Other References for CVE-2023-4163 (1)

Same Patch Batch · Brocade · 2023-08-31 · 5 CVEs total

CVE-2023-31424 8.1 HIGH Web authentication and authorization bypass
CVE-2023-31423 5.7 MEDIUM Possible information exposure through log file vulnerability
CVE-2023-31925 5.4 MEDIUM Storage of clear text password in Brocade SANnav
CVE-2023-4162 4.4 MEDIUM Segmentation fault in Brocade Fabric OS after Brocade Fabric OS v9.0

IV. Related Vulnerabilities

Same product: Brocade Fabric OS
Same vendor: Brocade
Same weakness: CWE-120

V. Comments for CVE-2023-4163

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