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

Severity

 Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.05% (22nd percentile)

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  • Snyk ID SNYK-CENTOS8-KERNELDEBUGDEVEL-2114061
  • published 26 Jul 2021
  • disclosed 15 Sep 2020
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Introduced: 15 Sep 2020

CVE-2020-26541 Open this link in a new tab
CWE-347 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade Centos:8 kernel-debug-devel 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 kernel-debug-devel package and not the kernel-debug-devel 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
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NVD

6.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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Red Hat

6.5 medium
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SUSE

6 medium