CVE-2021-42341
HIGHCVSS 7.5/10EPSS 2.05%
Last modified
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/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-42341?
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.
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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