VDB

CVE-2020-14309

CVE-2020-14309 PUBLISHED CVSS 6.699999809265137 MEDIUM

There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.

EPSS 0.48% · 39.9th percentile

Risk Scores

CVSS 3.1
6.699999809265137
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.48%
39.9th percentile

Affected Products

VendorProductVersions
Ubuntu:Pro:14.04:LTSgrub22.02~beta2-9ubuntu1.8, 2.02~beta2-9ubuntu1.11, 2.02~beta2-9ubuntu1.12
Ubuntu:20.04:LTSgrub2-signed0, 1.128, 1.129
Ubuntu:18.04:LTSgrub22.02-2ubuntu8.2, 2.02-2ubuntu8.15, 2.02-2ubuntu8.14
Ubuntu:20.04:LTSgrub2-unsigned2.04-1ubuntu44, 0, 2.04-1ubuntu44.2
Ubuntu:Pro:14.04:LTSgrub2-signed1.34.20, 1.34.18, 1.34.17
Ubuntu:16.04:LTSgrub2-signed1.65, 1.66.7, 1.66.23
Ubuntu:18.04:LTSgrub2-signed1.93, 0, 1.85
Ubuntu:16.04:LTSgrub2-unsigned2.04-1ubuntu44.1.2, 2.04-1ubuntu44.1, 2.04-1ubuntu44
Ubuntu:16.04:LTSgrub2*, 0, *
Ubuntu:18.04:LTSgrub2-unsigned2.04-1ubuntu44.1.2, 2.04-1ubuntu44.1, 2.04-1ubuntu44
Ubuntu:20.04:LTSgrub20, 2.04-1ubuntu25, 2.04-1ubuntu18

Timeline

  • Jul 29, 2020 CVE Published
  • Apr 14, 2021 EPSS Score
  • Jun 23, 2021 EPSS Score
  • Aug 25, 2021 EPSS Score
  • Oct 26, 2021 EPSS Score
  • Jan 6, 2022 EPSS Score
  • Feb 4, 2022 EPSS Score
  • Mar 1, 2022 EPSS Score
  • Apr 1, 2022 EPSS Score
  • May 3, 2022 EPSS Score
  • Jul 4, 2022 EPSS Score
  • Sep 6, 2022 EPSS Score

References

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