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cveRedhatCVE-2020-25632
HistoryMar 03, 2021 - 5:15 p.m.

CVE-2020-25632

2021-03-0317:15:11
CWE-416
redhat
web.nvd.nist.gov
276
9
grub2
vulnerability
arbitrary code execution
secure boot
cve-2020-25632
nvd

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.2

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.3

Confidence

High

EPSS

0

Percentile

5.1%

JSON

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Affected configurations

Nvd
Vulners
Node
gnugrub2Range<2.06
Node
redhatenterprise_linuxMatch7.0
OR
redhatenterprise_linuxMatch8.0
OR
redhatenterprise_linux_server_ausMatch7.2
OR
redhatenterprise_linux_server_ausMatch7.3
OR
redhatenterprise_linux_server_ausMatch7.4
OR
redhatenterprise_linux_server_ausMatch7.6
OR
redhatenterprise_linux_server_ausMatch7.7
OR
redhatenterprise_linux_server_ausMatch8.2
OR
redhatenterprise_linux_server_eusMatch7.6
OR
redhatenterprise_linux_server_eusMatch7.7
OR
redhatenterprise_linux_server_eusMatch8.1
OR
redhatenterprise_linux_server_tusMatch7.4
OR
redhatenterprise_linux_server_tusMatch7.6
OR
redhatenterprise_linux_server_tusMatch7.7
OR
redhatenterprise_linux_server_tusMatch8.2
OR
redhatenterprise_linux_workstationMatch7.0
Node
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
Node
netappontap_select_deploy_administration_utilityMatch-
VendorProductVersionCPE
gnugrub2*cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:*
redhatenterprise_linux7.0cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhatenterprise_linux8.0cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
redhatenterprise_linux_server_aus7.2cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:*
redhatenterprise_linux_server_aus7.3cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
redhatenterprise_linux_server_aus7.4cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
redhatenterprise_linux_server_aus7.6cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
redhatenterprise_linux_server_aus7.7cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*
redhatenterprise_linux_server_aus8.2cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*
redhatenterprise_linux_server_eus7.6cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
Rows per page:
1-10 of 201

CNA Affected

[
  {
    "product": "grub2",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "grub 2.06"
      }
    ]
  }
]

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CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.2

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

8.3

Confidence

High

EPSS

0

Percentile

5.1%

JSON
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