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 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

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

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
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html
https://blog.envoyproxy.io	Product
https://github.com/envoyproxy/envoy/commits/master	Patch
https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4	Exploit Third Party Advisory
https://groups.google.com/forum/#%21forum/envoy-users

Configurations

Configuration 1 (hide)

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

History

07 Nov 2023, 03:07

Type	Values Removed	Values Added
References	~~{'url': 'https://groups.google.com/forum/#!forum/envoy-users', 'name': 'https://groups.google.com/forum/#!forum/envoy-users', 'tags': ['Mailing List', 'Third Party Advisory'], 'refsource': 'MISC'}~~	() https://groups.google.com/forum/#%21forum/envoy-users -

Information

Published : 2019-12-13 13:15

Updated : 2023-12-10 13:13

NVD link : CVE-2019-18802

Mitre link : CVE-2019-18802

CVE.ORG link : CVE-2019-18802

JSON object : View

Products Affected

envoyproxy

envoy

CWE

NVD-CWE-noinfo

{"id": "CVE-2019-18802", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "HIGH", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2019-12-13T13:15:11.383", "references": [{"url": "http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html", "source": "cve@mitre.org"}, {"url": "https://blog.envoyproxy.io", "tags": ["Product"], "source": "cve@mitre.org"}, {"url": "https://github.com/envoyproxy/envoy/commits/master", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://groups.google.com/forum/#%21forum/envoy-users", "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se detect\u00f3 un problema en Envoy versi\u00f3n 1.12.0. Un cliente remoto no confiable puede enviar un encabezado HTTP (como Host) con espacios en blanco despu\u00e9s del contenido del encabezado. Envoy tratar\u00e1 el \"header-value \" como una cadena diferente del \"header-value\", de modo que, por ejemplo, con el encabezado Host \"example.com \" se podr\u00edan omitir los comparadores de \"example.com\"."}], "lastModified": "2023-11-07T03:07:16.660", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A9FE9447-DDAB-42A3-827A-DAB57328D902", "versionEndIncluding": "1.12.1"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}