An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat "header-value " as a different string from "header-value" so for example with the Host header "example.com " one could bypass "example.com" matchers.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2019-12-13T12:21:26

Updated: 2024-08-05T02:02:39.625Z

Reserved: 2019-11-07T00:00:00

Link: CVE-2019-18802

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-12-13T13:15:11.383

Modified: 2024-11-21T04:33:35.877

Link: CVE-2019-18802

cve-icon Redhat

Severity : Important

Publid Date: 2019-12-10T18:00:00Z

Links: CVE-2019-18802 - Bugzilla