Vulnerability Monitor

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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.

Published

2019-12-13T13:15:11.383

Last Modified

2024-11-21T04:33:35.877

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
NVD-CWE-noinfo

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	envoyproxy	envoy	≤ 1.12.1	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html ([email protected])
https://blog.envoyproxy.io Product ([email protected])
https://github.com/envoyproxy/envoy/commits/master Patch ([email protected])
https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4 Exploit, Third Party Advisory ([email protected])
https://groups.google.com/forum/#%21forum/envoy-users ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html (af854a3a-2127-422b-91ae-364da2661108)
https://blog.envoyproxy.io Product (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/envoyproxy/envoy/commits/master Patch (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://groups.google.com/forum/#%21forum/envoy-users (af854a3a-2127-422b-91ae-364da2661108)