CVE-2020-14311CWE-122CWE-190

There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems

Medium · published July 31, 2020

CVSS v3.1
5.7
EPSS
0%
Percentile
39.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00465 · 39.3th percentile
Weaknesses
CWE-122 · Heap-based Buffer Overflow; CWE-190 · Integer Overflow or Wraparound
Published
2020-07-31T20:56Z
EPSS history
Timeline
  • 31 JUL 20:56Z
    There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems
    cvelistv5