CVE-2019-18224
9.8 · CRITICALOverview
CVE-2019-18224 is a critical-severity vulnerability affecting gnu libidn2. It was published on October 21, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
Remediation
Check the references section for vendor advisories and patches from gnu. Update libidn2 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 | libidn2 | >= 0, < 2.1.1 | Affected |
References
Frequently Asked Questions
What is CVE-2019-18224?
CVE-2019-18224 is a critical-severity vulnerability affecting gnu libidn2. It was published on October 21, 2019 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2019-18224?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-18224?
Check the references section for vendor advisories and patches from gnu. Update libidn2 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-2019-18224?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-18224 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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