Use of Insufficiently Random Values Affecting kernel-modules-extra package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.49% (77th percentile)

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  • Snyk IDSNYK-CENTOS8-KERNELMODULESEXTRA-1959852
  • published19 Oct 2021
  • disclosed26 Aug 2021

Introduced: 26 Aug 2021

CVE-2021-20322  (opens in a new tab)
CWE-330  (opens in a new tab)

How to fix?

Upgrade Centos:8 kernel-modules-extra to version 0:4.18.0-372.9.1.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-modules-extra package and not the kernel-modules-extra package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.

CVSS Scores

version 3.1