GitHub Advisoryadvisory · Go

GHSA-5r5h-q934-cccp Calico Typha denial of service vulnerability

HIGH Published 2023-11-06 Modified 2023-11-08 Official page ↗
Aliases
CVE-2023-41378
Ecosystem
Go
Packages
github.com/projectcalico/calico
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400, CWE-755
Reviewed
2023-11-08

Affected packages

• Go github.com/projectcalico/calico: >= 3.26.0, < 3.26.3 → fixed in 3.26.3 • Go github.com/projectcalico/calico: <= 3.25.1 (no fix yet)

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.

Related

Alias · CVE (1)

  • CVE-2023-41378 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… vulnerability

Weakness · CWE (2)

  • CWE-400 Uncontrolled Resource Consumption weakness
  • CWE-755 Improper Handling of Exceptional Conditions weakness

References