CVE-2023-41378
7.5 · HIGHOverview
CVE-2023-41378 is a high-severity vulnerability affecting tigera calico_cloud. It was published on November 6, 2023 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. No authentication or special privileges are required for exploitation.
Technical Description
In certain conditions for Calico Typha (v3.26.2, v3.25.1 and below), and Calico Enterprise Typha (v3.17.1, v3.16.3, v3.15.3 and below), a client TLS handshake can block the Calico Typha server indefinitely, resulting in denial of service. The TLS Handshake() call is performed inside the main server handle for loop without any timeout allowing an unclean TLS handshake to block the main loop indefinitely while other connections will be idle waiting for that handshake to finish.
Remediation
Check the references section for vendor advisories and patches from tigera. Update calico_cloud 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 |
|---|---|---|---|
| tigera | calico_cloud | >= 0, < 18.0.0 | Affected |
| tigera | calico_enterprise | >= 0, < 3.15.4 | Affected |
| tigera | calico_os | >= 0, < 3.25.2 | Affected |
References
Frequently Asked Questions
What is CVE-2023-41378?
CVE-2023-41378 is a high-severity vulnerability affecting tigera calico_cloud. It was published on November 6, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2023-41378?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-41378?
Check the references section for vendor advisories and patches from tigera. Update calico_cloud 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-2023-41378?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-41378 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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