CVE-2023-41378

HIGH

Calico Typha <3.26.2, Calico Enterprise Typha <3.17.1 - DoS

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 7.5
EPSS 0.0022
EPSS Percentile 45.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-755 CWE-703 CWE-400
Status published
Products (4)
projectcalico/calico 3.26.0 - 3.26.3Go
tigera/calico_cloud < 18.0.0
tigera/calico_enterprise < 3.15.4
tigera/calico_os < 3.25.2
Published Nov 06, 2023
Tracked Since Feb 18, 2026