Vulnerability Monitor

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CVE-2021-4197

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1 versions of control groups. A local user could use this flaw to crash the system or escalate their privileges on the system.

Published

2022-03-23T20:15:10.200

Last Modified

2024-11-21T06:37:07.517

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

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

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-287
  • Type: Primary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel < 4.14.276 Yes
Operating System linux linux_kernel < 4.19.238 Yes
Operating System linux linux_kernel < 5.4.189 Yes
Operating System linux linux_kernel < 5.10.111 Yes
Operating System linux linux_kernel < 5.15.14 Yes
Application oracle communications_cloud_native_core_binding_support_function 22.1.1 Yes
Application oracle communications_cloud_native_core_binding_support_function 22.1.3 Yes
Application oracle communications_cloud_native_core_binding_support_function 22.2.0 Yes
Operating System debian debian_linux 10.0 Yes
Operating System broadcom brocade_fabric_operating_system_firmware - Yes
Operating System netapp h300s_firmware - Yes
Hardware netapp h300s - No
Operating System netapp h500s_firmware - Yes
Hardware netapp h500s - No
Operating System netapp h700s_firmware - Yes
Hardware netapp h700s - No
Operating System netapp h410s_firmware - Yes
Hardware netapp h410s - No
Operating System netapp h410c_firmware - Yes
Hardware netapp h410c - No
References