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Execution with Unnecessary Privileges Affecting bpftool package, versions <0:3.10.0-1062.el7

Severity

 Recommended
0.0
high
0
10

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.06% (30th percentile)

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  • Snyk ID SNYK-CENTOS7-BPFTOOL-2137665
  • published 26 Jul 2021
  • disclosed 5 Jun 2018
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Introduced: 5 Jun 2018

CVE-2018-10853 Open this link in a new tab
CWE-250 Open this link in a new tab

How to fix?

Upgrade Centos:7 bpftool to version 0:3.10.0-1062.el7 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:7 relevant fixed versions and status.

A flaw was found in the way Linux kernel KVM hypervisor before 4.18 emulated instructions such as sgdt/sidt/fxsave/fxrstor. It did not check current privilege(CPL) level while emulating unprivileged instructions. An unprivileged guest user/process could use this flaw to potentially escalate privileges inside guest.

References