CVE-2019-18838
High
Description
An issue was discovered in Envoy 1.12.0. Upon receipt of a malformed HTTP request without a Host header, it sends an internally generated "Invalid request" response. This internally generated response is dispatched through the configured encoder filter chain before being sent to the client. An encoder filter that invokes route manager APIs that access a request's Host header causes a NULL pointer dereference, resulting in abnormal termination of the Envoy process.
SeverityHigh
CVSS7.5
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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