Heap-based Buffer Overflow Affecting kernel-tools-libs package, versions <0:3.10.0-1062.1.1.el7


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.68% (81st percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELTOOLSLIBS-2145617
  • published26 Jul 2021
  • disclosed19 Feb 2019

Introduced: 19 Feb 2019

CVE-2019-9500  (opens in a new tab)
CWE-122  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Centos:7 kernel-tools-libs to version 0:3.10.0-1062.1.1.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools-libs package and not the kernel-tools-libs package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The Broadcom brcmfmac WiFi driver prior to commit 1b5e2423164b3670e8bc9174e4762d297990deff is vulnerable to a heap buffer overflow. If the Wake-up on Wireless LAN functionality is configured, a malicious event frame can be constructed to trigger an heap buffer overflow in the brcmf_wowl_nd_results function. This vulnerability can be exploited with compromised chipsets to compromise the host, or when used in combination with CVE-2019-9503, can be used remotely. 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.

CVSS Scores

version 3.1