CVE-2021-42341

Name: CVE-2021-42341
Creator: NVD / NIST
Published: 2021-10-14T05:15:07.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.05%

Last modified Jun 17, 2026

CVE-2021-42341 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. checkpath in OpenRC before 0.44.7 uses the direct output of strlen() to allocate strings, which does not account for the '\0' byte at the end of the string. This results in memory corruption. EPSS estimates a 2.05% chance of exploitation in the next 30 days.

Description

checkpath in OpenRC before 0.44.7 uses the direct output of strlen() to allocate strings, which does not account for the '\0' byte at the end of the string. This results in memory corruption. CVE-2021-42341 was introduced in git commit 63db2d99e730547339d1bdd28e8437999c380cae, which was introduced as part of OpenRC 0.44.0 development.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

2.05%

78.8th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Openrc Project	Openrc	>= 0.44.0, < 0.44.7

References

https://bugs.gentoo.org/816900Exploit, Patch, Third Party Advisory
https://github.com/OpenRC/openrc/commit/63db2d99e730547339d1bdd28e8437999c380caePatch, Third Party Advisory
https://github.com/OpenRC/openrc/commit/bb8334104baf4d5a4a442a8647fb9204738f2204Patch, Third Party Advisory
https://github.com/OpenRC/openrc/issues/418Exploit, Patch, Third Party Advisory
https://github.com/OpenRC/openrc/issues/459Exploit, Patch, Third Party Advisory
https://github.com/OpenRC/openrc/pull/462Patch, Third Party Advisory
https://bugs.gentoo.org/816900Exploit, Patch, Third Party Advisory
https://github.com/OpenRC/openrc/commit/63db2d99e730547339d1bdd28e8437999c380caePatch, Third Party Advisory
https://github.com/OpenRC/openrc/commit/bb8334104baf4d5a4a442a8647fb9204738f2204Patch, Third Party Advisory
https://github.com/OpenRC/openrc/issues/418Exploit, Patch, Third Party Advisory
https://github.com/OpenRC/openrc/issues/459Exploit, Patch, Third Party Advisory
https://github.com/OpenRC/openrc/pull/462Patch, Third Party Advisory

Timeline

Published: Oct 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42341?

How severe is CVE-2021-42341?

CVE-2021-42341 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.05% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42341?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-42341?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST