Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tigera | Calico Cloud | < 18.0.0 |
| Tigera | Calico Enterprise | < 3.15.4 |
| Tigera | Calico Os | < 3.25.2 |
Related Weaknesses (CWE)
References
- https://github.com/projectcalico/calico/pull/7908Issue Tracking
- https://github.com/projectcalico/calico/pull/7993Issue TrackingPatch
- https://www.tigera.io/security-bulletins-tta-2023-001/Vendor Advisory
- https://github.com/projectcalico/calico/pull/7908Issue Tracking
- https://github.com/projectcalico/calico/pull/7993Issue TrackingPatch
- https://www.tigera.io/security-bulletins-tta-2023-001/Vendor Advisory
FAQ
What is CVE-2023-41378?
CVE-2023-41378 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 indefin...
How severe is CVE-2023-41378?
CVE-2023-41378 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-41378?
Check the references section above for vendor advisories and patch information. Affected products include: Tigera Calico Cloud, Tigera Calico Enterprise, Tigera Calico Os.