USN-3812-1 (UBUNTU-CVE-2018-16843)
Vulnerability from osv_ubuntu – Published: 2018-11-07 15:01 – Updated: 2026-02-10 04:41 – Source website
VLAI
Summary
nginx vulnerabilities
Details
It was discovered that nginx incorrectly handled the HTTP/2 implementation. A remote attacker could possibly use this issue to cause excessive memory consumption, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16843)
Gal Goldshtein discovered that nginx incorrectly handled the HTTP/2 implementation. A remote attacker could possibly use this issue to cause excessive CPU usage, leading to a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16844)
It was discovered that nginx incorrectly handled the ngx_http_mp4_module module. A remote attacker could possibly use this issue with a specially crafted mp4 file to cause nginx to crash, stop responding, or access arbitrary memory. (CVE-2018-16845)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2018-16845",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:14.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nginx",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-common",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-core",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-full",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-light",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-naxsi",
"binary_version": "1.4.6-1ubuntu3.9"
},
{
"binary_name": "nginx-naxsi-ui",
"binary_version": "1.4.6-1ubuntu3.9"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.4.6-1ubuntu3.9?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.4.6-1ubuntu3.9"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2018-16843",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-16844",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-16845",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "nginx",
"binary_version": "1.10.3-0ubuntu0.16.04.3"
},
{
"binary_name": "nginx-common",
"binary_version": "1.10.3-0ubuntu0.16.04.3"
},
{
"binary_name": "nginx-core",
"binary_version": "1.10.3-0ubuntu0.16.04.3"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.10.3-0ubuntu0.16.04.3"
},
{
"binary_name": "nginx-full",
"binary_version": "1.10.3-0ubuntu0.16.04.3"
},
{
"binary_name": "nginx-light",
"binary_version": "1.10.3-0ubuntu0.16.04.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.10.3-0ubuntu0.16.04.3?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.3-0ubuntu0.16.04.3"
}
],
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2018-16843",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-16844",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2018-16845",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libnginx-mod-http-auth-pam",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-cache-purge",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-dav-ext",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-echo",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-fancyindex",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-geoip",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-headers-more-filter",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-image-filter",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-lua",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-ndk",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-perl",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-subs-filter",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-uploadprogress",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-upstream-fair",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-http-xslt-filter",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-mail",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-nchan",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-rtmp",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "libnginx-mod-stream",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "nginx",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "nginx-common",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "nginx-core",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "nginx-extras",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "nginx-full",
"binary_version": "1.14.0-0ubuntu1.2"
},
{
"binary_name": "nginx-light",
"binary_version": "1.14.0-0ubuntu1.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "nginx",
"purl": "pkg:deb/ubuntu/nginx@1.14.0-0ubuntu1.2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.14.0-0ubuntu1.2"
}
],
"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"
]
}
],
"aliases": [],
"details": "It was discovered that nginx incorrectly handled the HTTP/2 implementation.\nA remote attacker could possibly use this issue to cause excessive memory\nconsumption, leading to a denial of service. This issue only affected\nUbuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-16843)\n\nGal Goldshtein discovered that nginx incorrectly handled the HTTP/2\nimplementation. A remote attacker could possibly use this issue to cause\nexcessive CPU usage, leading to a denial of service. This issue only\naffected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10.\n(CVE-2018-16844)\n\nIt was discovered that nginx incorrectly handled the ngx_http_mp4_module\nmodule. A remote attacker could possibly use this issue with a specially\ncrafted mp4 file to cause nginx to crash, stop responding, or access\narbitrary memory. (CVE-2018-16845)\n",
"id": "USN-3812-1",
"modified": "2026-02-10T04:41:26Z",
"published": "2018-11-07T15:01:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3812-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-16843"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-16844"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-16845"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "nginx vulnerabilities",
"upstream": [
"UBUNTU-CVE-2018-16843",
"UBUNTU-CVE-2018-16844",
"UBUNTU-CVE-2018-16845"
]
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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