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CVE-2020-14311

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CVE-2020-14311

Published: Jul 31, 2020

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

5.7

MEDIUM

Description

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.

VendorProductVersions

The Grub2 Project

grub2

affected
2.06

Weaknesses (CWE)

CWE-190
CWE-122

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

References

USN-4432-1
vendor-advisory
x_refsource_UBUNTU
openSUSE-SU-2020:1169
vendor-advisory
x_refsource_SUSE
openSUSE-SU-2020:1168
vendor-advisory
x_refsource_SUSE
GLSA-202104-05
vendor-advisory
x_refsource_GENTOO

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