ubuntu-cve-2019-20372
Vulnerability from osv_ubuntu
Published
2020-01-09 21:15
Modified
2025-09-08 16:45
Summary
Details
NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.
Severity
5.3 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "nginx",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-common",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-core",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-full",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-light",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-naxsi",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
},
{
"binary_name": "nginx-naxsi-ui",
"binary_version": "1.4.6-1ubuntu3.9+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.4.6-1ubuntu3.9+esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.6-1ubuntu3.9+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.4.1-3ubuntu1",
"1.4.3-2ubuntu1",
"1.4.4-1ubuntu1",
"1.4.4-2ubuntu1",
"1.4.4-4ubuntu1",
"1.4.5-1ubuntu1",
"1.4.6-1ubuntu2",
"1.4.6-1ubuntu3",
"1.4.6-1ubuntu3.1",
"1.4.6-1ubuntu3.2",
"1.4.6-1ubuntu3.3",
"1.4.6-1ubuntu3.4",
"1.4.6-1ubuntu3.5",
"1.4.6-1ubuntu3.6",
"1.4.6-1ubuntu3.7",
"1.4.6-1ubuntu3.8",
"1.4.6-1ubuntu3.9"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nginx",
"binary_version": "1.10.3-0ubuntu0.16.04.5"
},
{
"binary_name": "nginx-common",
"binary_version": "1.10.3-0ubuntu0.16.04.5"
},
{
"binary_name": "nginx-core",
"binary_version": "1.10.3-0ubuntu0.16.04.5"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.10.3-0ubuntu0.16.04.5"
},
{
"binary_name": "nginx-full",
"binary_version": "1.10.3-0ubuntu0.16.04.5"
},
{
"binary_name": "nginx-light",
"binary_version": "1.10.3-0ubuntu0.16.04.5"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.10.3-0ubuntu0.16.04.5?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.3-0ubuntu0.16.04.5"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.9.3-1ubuntu1",
"1.9.6-2ubuntu1",
"1.9.6-2ubuntu2",
"1.9.9-0ubuntu1",
"1.9.9-1ubuntu1",
"1.9.10-0ubuntu1",
"1.9.10-1ubuntu1",
"1.9.11-0ubuntu1",
"1.9.11-0ubuntu2",
"1.9.12-0ubuntu1",
"1.9.13-0ubuntu1",
"1.9.14-0ubuntu1",
"1.9.15-0ubuntu1",
"1.10.0-0ubuntu0.16.04.1",
"1.10.0-0ubuntu0.16.04.2",
"1.10.0-0ubuntu0.16.04.3",
"1.10.0-0ubuntu0.16.04.4",
"1.10.3-0ubuntu0.16.04.1",
"1.10.3-0ubuntu0.16.04.2",
"1.10.3-0ubuntu0.16.04.3",
"1.10.3-0ubuntu0.16.04.4"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnginx-mod-http-auth-pam",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-cache-purge",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-dav-ext",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-echo",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-fancyindex",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-headers-more-filter",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-lua",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-ndk",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-subs-filter",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-uploadprogress",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-upstream-fair",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-nchan",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-rtmp",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "nginx",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "nginx-common",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "nginx-core",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "nginx-full",
"binary_version": "1.14.0-0ubuntu1.7"
},
{
"binary_name": "nginx-light",
"binary_version": "1.14.0-0ubuntu1.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.14.0-0ubuntu1.7?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.14.0-0ubuntu1.7"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.12.1-0ubuntu2",
"1.13.6-2ubuntu1",
"1.13.6-2ubuntu2",
"1.13.10-1ubuntu1",
"1.13.12-0ubuntu1",
"1.14.0-0ubuntu1",
"1.14.0-0ubuntu1.1",
"1.14.0-0ubuntu1.2",
"1.14.0-0ubuntu1.3",
"1.14.0-0ubuntu1.4",
"1.14.0-0ubuntu1.5",
"1.14.0-0ubuntu1.6"
]
}
],
"aliases": [],
"details": "NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.",
"id": "UBUNTU-CVE-2019-20372",
"modified": "2025-09-08T16:45:49Z",
"published": "2020-01-09T21:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-20372"
},
{
"type": "REPORT",
"url": "https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdf"
},
{
"type": "REPORT",
"url": "http://nginx.org/en/CHANGES"
},
{
"type": "REPORT",
"url": "https://duo.com/docs/dng-notes#version-1.5.4-january-2020"
},
{
"type": "REPORT",
"url": "https://github.com/kubernetes/ingress-nginx/pull/4859"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4235-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4235-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2019-20372"
}
],
"related": [
"USN-4235-1",
"USN-4235-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2019-20372"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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