CVE-2023-41378
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductTigera Calico Cloud
PublishedNov 6, 2023
First seenNov 6, 2023
How to fix
Update
- tigera calico_cloud18.0.0 or later
- tigera calico_enterprise3.15.4, 3.16.4, 3.17.2 or later
- tigera calico_os3.25.2, 3.26.3 or later
- github.com/projectcalico/calico3.26.3 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| tigera calico_cloud | v < 18.0.0 | 18.0.0 |
| tigera calico_enterprise | v < 3.15.4, 3.16.0 ≤ v < 3.16.4, 3.17.0 ≤ v < 3.17.2 | 3.15.4, 3.16.4, 3.17.2 |
| tigera calico_os | v < 3.25.2, 3.26.0 ≤ v < 3.26.3 | 3.25.2, 3.26.3 |
| github.com/projectcalico/calicoGo | 3.26.0 ≤ v < 3.26.3, v ≤ 3.25.1 | 3.26.3 |
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