CVE-2021-43395
5.5 · MEDIUMOverview
CVE-2021-43395 is a medium-severity vulnerability affecting illumos illumos. It was published on December 26, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.
Remediation
Check the references section for vendor advisories and patches from illumos. Update illumos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| illumos | illumos | >= 0, < 2022-01-18 | Affected |
References
Frequently Asked Questions
What is CVE-2021-43395?
CVE-2021-43395 is a medium-severity vulnerability affecting illumos illumos. It was published on December 26, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2021-43395?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-43395?
Check the references section for vendor advisories and patches from illumos. Update illumos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-43395?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-43395 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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