Integer Overflow or Wraparound Affecting grub2-efi-ia32-cdboot package, versions <1:2.02-0.86.el7_8


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-CENTOS7-GRUB2EFIIA32CDBOOT-2166266
  • published26 Jul 2021
  • disclosed29 Jul 2020

Introduced: 29 Jul 2020

CVE-2020-14308  (opens in a new tab)
CWE-190  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Centos:7 grub2-efi-ia32-cdboot to version 1:2.02-0.86.el7_8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream grub2-efi-ia32-cdboot package and not the grub2-efi-ia32-cdboot package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

CVSS Scores

version 3.1