Published: 03/03/2021 Updated: 07/11/2023

CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9

CVSS v3 Base Score: 6.7 | Impact Score: 5.9 | Exploitability Score: 0.8

VMScore: 646

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

A flaw was found in grub2 in versions before 2.06. The option parser allows an malicious user to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Vulnerable Product	Search on Vulmon	Subscribe to Product
gnu grub2
redhat enterprise linux server aus 7.2
redhat enterprise linux workstation 7.0
redhat enterprise linux 7.0
redhat enterprise linux server aus 7.3
redhat enterprise linux server aus 7.4
redhat enterprise linux server tus 7.4
redhat enterprise linux server tus 7.6
redhat enterprise linux server eus 7.6
redhat enterprise linux server aus 7.6
redhat enterprise linux 8.0
redhat enterprise linux server eus 7.7
redhat enterprise linux server aus 7.7
redhat enterprise linux server tus 7.7
redhat enterprise linux server eus 8.1
redhat enterprise linux server tus 8.2
redhat enterprise linux server aus 8.2
fedoraproject fedora 33
fedoraproject fedora 34
netapp ontap select deploy administration utility -

Several vulnerabilities have been discovered in the GRUB2 bootloader CVE-2020-14372 It was discovered that the acpi command allows a privileged user to load crafted ACPI tables when Secure Boot is enabled CVE-2020-25632 A use-after-free vulnerability was found in the rmmod command CVE-2020-25647 An out-of-bound write vulnerabili ...

A flaw was found in GRUB 2, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory The table is further loaded and exe ...

A flaw was found in grub2 The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability ...

The option parser in GRUB2 allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options ...

HP has been informed of a potential security vulnerability in GRUB2 bootloaders commonly used by Linux This vulnerability, known as “There’s a Hole in the Boot” (also nicknamed “BootHole”), could allow bypass of UEFI Secure Boot and allow arbitrary code execution Additional GRUB2 vulnerabilities found in response to the initial report ...

Critical Infrastructure Sectors: Energy

On 2021-02-23 we notified the distros list about multiple grub vulnerabilities This is the formal announcement sent to grub-devel which explains in a little more detail what has been done jch [snip] ...

CWE-787 https://bugzilla.redhat.com/show_bug.cgi?id=1924696 https://security.gentoo.org/glsa/202104-05 https://security.netapp.com/advisory/ntap-20220325-0001/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/https://nvd.nist.gov https://www.debian.org/security/2021/dsa-4867 https://www.cisa.gov/uscert/ics/advisories/icsa-21-336-06

CVE-2021-20225

Vulnerability Summary

Vulnerability Trend

Vendor Advisories

ICS Advisories

Mailing Lists

References

Vulmon Search

About

Products

Connect