CVE-2023-41378

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.

Reserved 2023-08-29 | Published 2023-11-06 | Updated 2024-09-05 | Assigner Tigera

Problem types

CWE-400 Uncontrolled Resource Consumption

CWE-703 Improper Check or Handling of Exceptional Conditions

Product status

Default status
unaffected

v3.26.0
affected

Any version
affected

Default status
unaffected

v3.17.0
affected

v3.16.0
affected

Any version
affected

Credits

Rodrigo Fior Kuntzer (Github: rodrigorfk) finder

Anthony Tam remediation verifier

Behnam Shobiri remediation reviewer

Shaun Crampton remediation developer

Matt Dupre remediation reviewer

References

www.tigera.io/security-bulletins-tta-2023-001/ vendor-advisory release-notes

github.com/projectcalico/calico/pull/7908 issue-tracking

github.com/projectcalico/calico/pull/7993 patch

cve.org (CVE-2023-41378)

nvd.nist.gov (CVE-2023-41378)

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