CVE-2021-3997

CVSS V2 None CVSS V3 Medium 5.5

Description

A flaw was found in systemd. An uncontrolled recursion in systemd-tmpfiles may lead to a denial of service at boot time when too many nested directories are created in /tmp.

Overview

CVE ID
CVE-2021-3997

Assigner
secalert@redhat.com

Vulnerability Status
Analyzed

Published Version
2022-08-23T20:15:08

Last Modified Date
2022-10-18T19:01:23

Weakness Enumerations

CWE	URL
CWE-674	http://cwe.mitre.org/data/definitions/674.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:systemd_project:systemd::::::::	1	OR	240	250.2
cpe:2.3:o:fedoraproject:fedora:34:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:35:::::::*	1	OR
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:9.0:::::::*	1	OR

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C: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

References

Reference URL	Reference Tags
https://access.redhat.com/security/cve/CVE-2021-3997
https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1
https://bugzilla.redhat.com/show_bug.cgi?id=2024639
https://www.openwall.com/lists/oss-security/2022/01/10/2

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-3997
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3997

History

Created	Old Value	New Value	Data Type	Notes
2022-08-23 21:00:07				Added to TrackCVE