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CVE-2024-23326

Public on 2024-06-04
Modified on 2024-06-14
Description

Envoy is a cloud-native, open source edge and service proxy. A theoretical request smuggling vulnerability exists through Envoy if a server can be tricked into adding an upgrade header into a response. Per RFC https://www.rfc-editor.org/rfc/rfc7230#section-6.7 a server sends 101 when switching protocols. Envoy incorrectly accepts a 200 response from a server when requesting a protocol upgrade, but 200 does not indicate protocol switch. This opens up the possibility of request smuggling through Envoy if the server can be tricked into adding the upgrade header to the response.

Severity
Medium
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CVSS v3 Base Score
5.9
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Ecs Extra ecs-service-connect-agent 2024-06-19 20:39 ALAS2ECS-2024-037
Amazon Linux 2023 ecs-service-connect-agent 2024-06-19 21:09 ALAS2023-2024-647

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD CVSSv3 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Red Hat: CVE-2024-23326 Mitre: CVE-2024-23326 FAQs regarding Amazon Linux ALAS/CVE Severity