Out-of-bounds Write Affecting shim-ia32 package, versions <0:15.4-2.el8_1


Severity

medium

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-CENTOS8-SHIMIA32-2102523
  • published 26 Jul 2021
  • disclosed 2 Mar 2021

How to fix?

Upgrade Centos:8 shim-ia32 to version 0:15.4-2.el8_1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream shim-ia32 package and not the shim-ia32 package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CVSS Scores

version 3.1
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Snyk

7.5 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    High
  • User Interaction (UI)
    None
  • Scope (S)
    Changed
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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NVD

6.7 medium
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SUSE

7.5 high
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Red Hat

7.5 high