CVE-2023-41378

Calico Typha hangs during unclean TLS handshake

Published Nov 6, 2023 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-2890 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.
Github GHSA Github GHSA GHSA-5r5h-q934-cccp Calico Typha denial of service vulnerability
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Tigera
Published
Updated
Sep 5, 2024, 1:40 PM
Reserved
Aug 29, 2023, 5:03 PM
Status
Modified
Published
Nov 6, 2023, 4:15 PM
Modified
Jun 17, 2026, 6:22 AM