Vulnerability Intelligence Report
CVE-2019-18802
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
EPSS Probability:2.46%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| envoyproxy | envoy | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
2.457%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2019-11-07T00:00:00 |
| Published | 2019-12-13T12:21:26 |
| Last Updated | 2024-08-05T02:02:39 |
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