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GoogleOSV:CVE-2021-20233HistoryMar 03, 2021 - 5:15 p.m.
CVE-2021-20233
2021-03-0317:15:12
Google
osv.dev
13
grub2
memory corruption
data confidentiality
data integrity
system availability
cve-2021-20233
EPSS
0
Percentile
5.1%
A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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prion
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cbl_mariner
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CVE-2021-20233 affecting package grub2 for versions less than 2.06~rc1-7
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CVE-2021-20233 affecting package grub2 2.06~rc1-10
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debiancve
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ubuntucve
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CVE-2021-20233
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redhatcve
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CVE-2021-20233
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CVE-2021-3408
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cvelist
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CVE-2021-20233
2021-03-03 16:44:34
cve
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CVE-2021-20233
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githubexploit
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nessus
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Windows Security Feature Bypass in Secure Boot (BootHole)
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EulerOS 2.0 SP5 : grub2 (EulerOS-SA-2021-1900)
2021-05-18 00:00:00
EulerOS Virtualization 3.0.2.2 : grub2 (EulerOS-SA-2021-2126)
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mageia
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2021-06-29 00:16:35
Updated grub2 packages fix security vulnerabilities
2021-07-09 01:43:19
openvas
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Mageia: Security Advisory (MGASA-2021-0291)
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2021-07-07 00:00:00
Huawei EulerOS: Security Advisory for grub2 (EulerOS-SA-2021-1900)
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ubuntu
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GRUB 2 vulnerabilities
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redhat
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(RHSA-2021:2566) Moderate: fwupd security update
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(RHSA-2021:0703) Moderate: grub2 security update
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oraclelinux
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grub2 security update
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grub2 security update
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grub2 security update
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fedora
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[SECURITY] Fedora 34 Update: grub2-2.06~rc1-2.fc34
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[SECURITY] Fedora 34 Update: efi-rpm-macros-5-2.fc34
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Moderate: shim security update
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Moderate: shim security update
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rocky
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fwupd security update
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shim security update
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amazon
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Medium: grub2
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almalinux
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Moderate: fwupd security update
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Moderate: grub2 security update
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Moderate: shim security update
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debian
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[SECURITY] [DSA 4867-1] grub2 security update
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[SECURITY] [DSA 4867-1] grub2 security update
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archlinux
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[ASA-202106-43] grub: multiple issues
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hp
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HP PC UEFI Secure Boot Database Update July 2022
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HPSBHF03678 rev. 2 - GRUB2 Bootloader Arbitrary Code Execution
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suse
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Security update for grub2 (important)
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ibm
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photon
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rosalinux
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Advisory ROSA-SA-2023-2300
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Advisory ROSA-SA-2021-1849
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gentoo
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mscve
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Microsoft Guidance for Addressing Security Feature Bypass in GRUB
2020-07-29 07:00:00
redos
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ROS-20220920-01
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ics
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