Integer Overflow or Wraparound Affecting grub2 package, versions [,2.06)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (21st percentile)

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  • Snyk IDSNYK-UNMANAGED-GRUB2-2368574
  • published26 Jan 2022
  • disclosed31 Jul 2020
  • creditUnknown

Introduced: 31 Jul 2020

CVE-2020-14311  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade grub2 to version 2.06 or higher.

Overview

Affected versions of this package are vulnerable to Integer Overflow or Wraparound. There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.

CVSS Scores

version 3.1