CVE-2022-3821

Public Exploit

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org
Affected: n/a systemd
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2139327 issue tracking third party advisory
https://github.com/systemd/systemd/issues/23928 issue tracking exploit third party advisory
https://github.com/systemd/systemd/pull/23933 third party advisory patch
https://github.com/systemd/systemd/commit/9102c625a673a3246d7e73d8737f3494446bad4e third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVBQC2VLSDVQAPJTEMTREXDL4HYLXG2P/ vendor advisory
https://security.gentoo.org/glsa/202305-15 vendor advisory
https://lists.debian.org/debian-lts-announce/2023/06/msg00036.html mailing list

Frequently Asked Questions

What is the severity of CVE-2022-3821?
CVE-2022-3821 has been scored as a medium severity vulnerability.
How to fix CVE-2022-3821?
To fix CVE-2022-3821, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-3821 being actively exploited in the wild?
It is possible that CVE-2022-3821 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-3821?
CVE-2022-3821 affects n/a systemd.
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