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Incorrect Permission Assignment for Critical Resource Affecting kernel-bootwrapper package, versions <0:3.10.0-693.el7

Severity

 Recommended
high

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.06% (28th percentile)

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  • Snyk ID SNYK-CENTOS7-KERNELBOOTWRAPPER-2082973
  • published 26 Jul 2021
  • disclosed 18 Apr 2017
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Introduced: 18 Apr 2017

CVE-2016-9604 Open this link in a new tab
CWE-732 Open this link in a new tab

How to fix?

Upgrade Centos:7 kernel-bootwrapper to version 0:3.10.0-693.el7 or higher.

NVD Description

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

It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.