CVE-2020-25632

CVSS V2 High 7.2 CVSS V3 High 8.2
Description
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.
Overview
  • CVE ID
  • CVE-2020-25632
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-03-03T17:15:11
  • Last Modified Date
  • 2022-05-13T20:51:19
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* 1 OR 2.06
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:8.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • LOCAL
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 7.2
  • Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • HIGH
  • User Interaction
  • NONE
  • Scope
  • CHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.2
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.5
  • Impact Score
  • 6
References
Reference URL Reference Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1879577 Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202104-05 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220325-0001/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-25632
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25632
History
Created Old Value New Value Data Type Notes
2022-04-04 00:42:18 Added to TrackCVE
2022-12-05 23:02:54 2021-03-03T17:15Z 2021-03-03T17:15:11 CVE Published Date updated
2022-12-05 23:02:54 2022-05-13T20:51:19 CVE Modified Date updated
2022-12-05 23:02:54 Analyzed Vulnerability Status updated