CVE-2021-4037

CVSS V2 None CVSS V3 High 7.8
Description
A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. This vulnerability is similar to the previous CVE-2018-13405 and adds the missed fix for the XFS.
Overview
  • CVE ID
  • CVE-2021-4037
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-08-24T16:15:09
  • Last Modified Date
  • 2022-12-08T03:40:19
Weakness Enumerations
CWE URL
CWE-284 http://cwe.mitre.org/data/definitions/284.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 1 OR 5.11
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* 1 OR
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 7.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 1.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://access.redhat.com/security/cve/CVE-2021-4037 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2004810 Issue Tracking Permissions Required Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2027239 Issue Tracking Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01ea173e103e Mailing List Patch Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fa3ecd87848 Mailing List Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html
https://www.debian.org/security/2022/dsa-5257 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-4037
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4037
History
Created Old Value New Value Data Type Notes
2022-08-24 17:00:13 Added to TrackCVE
2022-12-08 03:50:43 2022-12-08T03:40:19 CVE Modified Date updated
2022-12-08 03:50:43 Undergoing Analysis Analyzed Vulnerability Status updated