CVE-2021-3995

CVSS V2 None CVSS V3 Medium 5.5
Description
A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.
Overview
  • CVE ID
  • CVE-2021-3995
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-08-23T20:15:08
  • Last Modified Date
  • 2023-02-03T23:30:56
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:kernel:util-linux:*:*:*:*:*:*:*:* 1 OR 2.34 2.37.3
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* 1 OR
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 5.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1.8
  • Impact Score
  • 3.6
History
Created Old Value New Value Data Type Notes
2022-08-23 21:00:07 Added to TrackCVE
2022-12-06 14:34:43 2022-12-01T01:15:10 CVE Modified Date updated
2022-12-06 14:34:43 Analyzed Undergoing Analysis Vulnerability Status updated
2022-12-06 14:34:45 References updated
2022-12-07 17:14:31 2022-12-07T17:08:51 CVE Modified Date updated
2022-12-07 17:14:31 Undergoing Analysis Analyzed Vulnerability Status updated
2022-12-09 05:24:56 2022-12-09T05:15:11 CVE Modified Date updated
2022-12-09 05:24:56 Analyzed Modified Vulnerability Status updated
2022-12-09 05:24:58 References updated
2022-12-09 18:21:02 2022-12-09T17:15:11 CVE Modified Date updated
2022-12-09 18:21:04 References updated
2022-12-09 19:16:22 2022-12-09T19:15:12 CVE Modified Date updated
2022-12-09 19:16:24 References updated
2022-12-10 05:33:28 Modified Undergoing Analysis Vulnerability Status updated
2023-02-04 00:14:17 2023-02-03T23:30:56 CVE Modified Date updated
2023-02-04 00:14:17 Undergoing Analysis Analyzed Vulnerability Status updated