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CVE-2023-35943

Public on 2023-07-25
Modified on 2023-08-10
Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the `origin` header in the Envoy configuration.

Severity
Medium
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CVSS v3 Base Score
6.3
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Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 - Ecs Extra ecs-service-connect-agent 2023-09-14 01:06 ALAS2ECS-2023-007
Amazon Linux 2 - Ecs Extra ecs-service-connect-agent 2023-08-17 17:04 ALAS2ECS-2023-006
Amazon Linux 2023 ecs-service-connect-agent 2023-09-14 00:54 ALAS2023-2023-344
Amazon Linux 2023 ecs-service-connect-agent 2023-08-17 11:20 ALAS2023-2023-300

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:H
NVD CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Red Hat: CVE-2023-35943 Mitre: CVE-2023-35943 FAQs regarding Amazon Linux ALAS/CVE Severity