CVE-2021-3543
6.7 · MEDIUMOverview
CVE-2021-3543 is a medium-severity vulnerability affecting nitro_enclaves_project nitro_enclaves. It was published on June 1, 2021 and has a CVSS 3.1 base score of 6.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.
Remediation
Check the references section for vendor advisories and patches from nitro_enclaves_project. Update nitro_enclaves 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 |
|---|---|---|---|
| nitro_enclaves_project | nitro_enclaves | >= 0, < 5.10.0 | Affected |
Frequently Asked Questions
What is CVE-2021-3543?
CVE-2021-3543 is a medium-severity vulnerability affecting nitro_enclaves_project nitro_enclaves. It was published on June 1, 2021 and has a CVSS 3.1 base score of 6.7 (MEDIUM).
How severe is CVE-2021-3543?
This vulnerability has a CVSS 3.1 base score of 6.7, 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-2021-3543?
Check the references section for vendor advisories and patches from nitro_enclaves_project. Update nitro_enclaves 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-2021-3543?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-3543 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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