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CVE-2019-9502— Broadcom wl driver is vulnerable to heap buffer overflow

Quick assessment

Affected
Broadcom WiFi drivers
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.

Broadcom WiFi Chipset Drivers是美国博通（Broadcom）公司的一款无线网络芯片组驱动程序。 Broadcom WiFi Chipset Drivers中存在基于堆的缓冲区溢出漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。

CVSS 7.9 · High EPSS 2.60% · P84
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I. Basic Information for CVE-2019-9502

Vulnerability Information
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Vulnerability Title
Broadcom wl driver is vulnerable to heap buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
The Broadcom wl WiFi driver is vulnerable to a heap buffer overflow. If the vendor information element data length is larger than 164 bytes, a heap buffer overflow is triggered in wlc_wpa_plumb_gtk. In the worst case scenario, by sending specially-crafted WiFi packets, a remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system. More typically, this vulnerability will result in denial-of-service conditions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Broadcom WiFi Chipset Drivers 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Broadcom WiFi Chipset Drivers是美国博通（Broadcom）公司的一款无线网络芯片组驱动程序。 Broadcom WiFi Chipset Drivers中存在基于堆的缓冲区溢出漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
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
Broadcom WiFi drivers wl -

II. Public POCs for CVE-2019-9502

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III. Intelligence Information for CVE-2019-9502

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Vendor Advisories for CVE-2019-9502 (1)

Security Blog Posts for CVE-2019-9502 (1)

IV. Related Vulnerabilities

Same product: WiFi drivers
Same vendor: Broadcom
Same weakness: CWE-122

V. Comments for CVE-2019-9502

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