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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/envoyproxy/envoy/commits/master	Patch
https://blog.envoyproxy.io	Product
https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4	Exploit Third Party Advisory
https://groups.google.com/forum/#!forum/envoy-users	Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*

Information

Published : 2019-12-13 05:15

Updated : 2020-08-24 10:37

NVD link : CVE-2019-18802

Mitre link : CVE-2019-18802

JSON object : View

CWE

NVD-CWE-noinfo

Products Affected

envoyproxy

envoy

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9.8 /10