Vulnerability Details CVE-2019-18838
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 28.6%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://blog.envoyproxy.io
- https://github.com/envoyproxy/envoy/commits/master
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc
- https://groups.google.com/forum/#%21forum/envoy-users
- https://blog.envoyproxy.io
- https://github.com/envoyproxy/envoy/commits/master
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-f2rv-4w6x-rwhc
- https://groups.google.com/forum/#%21forum/envoy-users
Products affected by CVE-2019-18838
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cpe:2.3:a:envoyproxy:envoy:-
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cpe:2.3:a:envoyproxy:envoy:1.0.0
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cpe:2.3:a:envoyproxy:envoy:1.1.0
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cpe:2.3:a:envoyproxy:envoy:1.10.0
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cpe:2.3:a:envoyproxy:envoy:1.11.0
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cpe:2.3:a:envoyproxy:envoy:1.11.1
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cpe:2.3:a:envoyproxy:envoy:1.11.2
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cpe:2.3:a:envoyproxy:envoy:1.12.0
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cpe:2.3:a:envoyproxy:envoy:1.12.1
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cpe:2.3:a:envoyproxy:envoy:1.2.0
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cpe:2.3:a:envoyproxy:envoy:1.3.0
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cpe:2.3:a:envoyproxy:envoy:1.4.0
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cpe:2.3:a:envoyproxy:envoy:1.5.0
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cpe:2.3:a:envoyproxy:envoy:1.6.0
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cpe:2.3:a:envoyproxy:envoy:1.7.0
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cpe:2.3:a:envoyproxy:envoy:1.7.1
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cpe:2.3:a:envoyproxy:envoy:1.8.0
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cpe:2.3:a:envoyproxy:envoy:1.9.0
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cpe:2.3:a:envoyproxy:envoy:1.9.1