CVE-2019-18802
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Envoy
PublishedDec 13, 2019
First seenDec 13, 2019
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| envoyproxy envoy | v ≤ 1.12.1 | — |
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