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


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-RHEL8-BPFTOOL-4271882
  • published13 Jan 2022
  • disclosed24 Mar 2021

Introduced: 24 Mar 2021

CVE-2021-45486  (opens in a new tab)
CWE-330  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade RHEL:8 bpftool to version 0:4.18.0-372.9.1.el8 or higher.
This issue was patched in RHSA-2022:1988.

NVD Description

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

In the IPv4 implementation in the Linux kernel before 5.12.4, net/ipv4/route.c has an information leak because the hash table is very small.

CVSS Scores

version 3.1