CVE-2023-41378 - Calico Typha hangs during unclean TLS handshake

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HIGH

Calico Typha hangs during unclean TLS handshake

Published Nov 6, 2023

7.5

HIGH

CVSS 3.1

EPSS 0.72%

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.

Affected products

Vendor Calico Product Typha Default
unaffected
Affected
- ≥ 0, ≤ v3.25.1
- ≥ v3.26.0, ≤ v3.26.2
Vendor Tigera Product Typha Default
unaffected
Affected
- ≥ 0, ≤ v3.15.3
- ≥ v3.16.0, ≤ v3.16.3
- ≥ v3.17.0, ≤ v3.17.1

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
Calico	Typha	unaffected	Affected ≥ 0, ≤ v3.25.1 ≥ v3.26.0, ≤ v3.26.2
Tigera	Typha	unaffected	Affected ≥ 0, ≤ v3.15.3 ≥ v3.16.0, ≤ v3.16.3 ≥ v3.17.0, ≤ v3.17.1

Vendor Calico Product Typha Default
unknown
Affected
- ≥ 0, ≤ v3.25.1
- ≥ v3.26.0, ≤ v3.26.2
Vendor Tigera Product Calico Default
unknown
Affected
- ≥ 0, ≤ v3.15.3
- ≥ v3.16.0, ≤ v3.16.3
- ≥ v3.17.0, ≤ v3.17.1

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
Calico	Typha	unknown	Affected ≥ 0, ≤ v3.25.1 ≥ v3.26.0, ≤ v3.26.2
Tigera	Calico	unknown	Affected ≥ 0, ≤ v3.15.3 ≥ v3.16.0, ≤ v3.16.3 ≥ v3.17.0, ≤ v3.17.1

github.com/projectcalico/calico

Go

Introduced 3.26.0 Fixed 3.26.3
github.com/projectcalico/calico

Go

Introduced 0 Fixed not fixed

Ecosystem	Package	Introduced	Fixed
Go	github.com/projectcalico/calico	3.26.0	3.26.3
Go	github.com/projectcalico/calico	0	not fixed

Remediation

No remediation recorded yet.

Weaknesses (3)

CWE-400

Uncontrolled Resource Consumption

CWE-703

CWE-755

References (8)

https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-2890
Advisory
https://github.com/advisories/GHSA-5r5h-q934-cccp
Advisory
https://github.com/projectcalico/calico/commit/2ebc1f92ecc39332cf1d55ba676d9101af24982f
https://github.com/projectcalico/calico/commit/ad8bd001e650ec7742ac30e58247e7eef5956125
https://github.com/projectcalico/calico/pull/7908
issue-trackingIssue Tracking
https://github.com/projectcalico/calico/pull/7993
patchIssue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2023-41378
https://www.tigera.io/security-bulletins-tta-2023-001/
vendor-advisoryrelease-notesVendor Advisory

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-2890		Advisory
https://github.com/advisories/GHSA-5r5h-q934-cccp		Advisory
https://github.com/projectcalico/calico/commit/2ebc1f92ecc39332cf1d55ba676d9101af24982f
https://github.com/projectcalico/calico/commit/ad8bd001e650ec7742ac30e58247e7eef5956125
https://github.com/projectcalico/calico/pull/7908		issue-trackingIssue Tracking
https://github.com/projectcalico/calico/pull/7993		patchIssue Tracking
https://nvd.nist.gov/vuln/detail/CVE-2023-41378
https://www.tigera.io/security-bulletins-tta-2023-001/		vendor-advisoryrelease-notesVendor Advisory