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CVE-2019-18802

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published12/13/2019

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

envoyproxy:envoy

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html(cve@mitre.org)

https://blog.envoyproxy.io(cve@mitre.org)

https://github.com/envoyproxy/envoy/commits/master(cve@mitre.org)

https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4(cve@mitre.org)

https://groups.google.com/forum/#%21forum/envoy-users(cve@mitre.org)

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html(af854a3a-2127-422b-91ae-364da2661108)

https://blog.envoyproxy.io(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/envoyproxy/envoy/commits/master(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4(af854a3a-2127-422b-91ae-364da2661108)

https://groups.google.com/forum/#%21forum/envoy-users(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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