CVE-2021-43411
7.5 · HIGHOverview
CVE-2021-43411 is a high-severity vulnerability affecting gnu hurd. It was published on November 7, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in GNU Hurd before 0.9 20210404-9. When trying to exec a setuid executable, there's a window of time when the process already has the new privileges, but still refers to the old task and is accessible through the old process port. This can be exploited to get full root access.
Remediation
Check the references section for vendor advisories and patches from gnu. Update hurd 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 |
|---|---|---|---|
| gnu | hurd | >= 0, < 0.9.20210404-9 | Affected |
References
Frequently Asked Questions
What is CVE-2021-43411?
CVE-2021-43411 is a high-severity vulnerability affecting gnu hurd. It was published on November 7, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2021-43411?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-43411?
Check the references section for vendor advisories and patches from gnu. Update hurd 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-2021-43411?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-43411 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
AI agents map your attack surface to find vulnerabilities like this one.
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