Improper Verification of Cryptographic Signature Affecting bpftool package, versions <0:4.18.0-305.7.1.el8_4


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (23rd percentile)

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  • Snyk IDSNYK-CENTOS8-BPFTOOL-2113091
  • published26 Jul 2021
  • disclosed15 Sept 2020

Introduced: 15 Sep 2020

CVE-2020-26541  (opens in a new tab)
CWE-347  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Centos:8 bpftool to version 0:4.18.0-305.7.1.el8_4 or higher.

NVD Description

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

The Linux kernel through 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. This affects certs/blacklist.c and certs/system_keyring.c.

CVSS Scores

version 3.1