CVE-2022-3821

MEDIUM

Published Nov 8, 20223y ago · Modified Jun 17, 20262w ago

5.5 CVSS 3.1

Medium

Published Nov 8, 2022 3y ago

Last Modified Jun 17, 2026 2w ago

Description

An off-by-one Error issue was discovered in Systemd in format_timespan() function of time-util.c. An attacker could supply specific values for time and accuracy that leads to buffer overrun in format_timespan(), leading to a Denial of Service.

CVSS Details

Base Score

5.5

Exploitability

1.8

Impact

3.6

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 Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

Public Exploit Known

Patch Available

Weaknesses 1

CWE-193

Affected Products 4

Vendor	Product	Version	Range
systemd_project	systemd	*	≤251
redhat	enterprise_linux	8.0	any
redhat	enterprise_linux	9.0	any
fedoraproject	fedora	35	any

References 7

bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2139327

Issue TrackingThird Party Advisory
github.com https://github.com/systemd/systemd/commit/9102c625a673a3246d7e73d8737f3494446bad4e

PatchThird Party Advisory
github.com https://github.com/systemd/systemd/issues/23928

ExploitIssue TrackingThird Party Advisory
github.com https://github.com/systemd/systemd/pull/23933

PatchThird Party Advisory
lists.debian.org https://lists.debian.org/debian-lts-announce/2023/06/msg00036.html
lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVBQC2VLSDVQAPJTEMTREXDL4HYLXG2P/
security.gentoo.org https://security.gentoo.org/glsa/202305-15

Remediation

github.com https://github.com/systemd/systemd/commit/9102c625a673a3246d7e73d8737f3494446bad4e

PatchThird Party Advisory
github.com https://github.com/systemd/systemd/pull/23933

PatchThird Party Advisory