GSD-2020-11996
Vulnerability from gsd - Updated: 2023-12-13 01:22Details
A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-11996",
"description": "A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.",
"id": "GSD-2020-11996",
"references": [
"https://www.suse.com/security/cve/CVE-2020-11996.html",
"https://www.debian.org/security/2020/dsa-4727",
"https://access.redhat.com/errata/RHSA-2021:3140",
"https://access.redhat.com/errata/RHSA-2021:0292",
"https://access.redhat.com/errata/RHSA-2020:5388",
"https://access.redhat.com/errata/RHSA-2020:5173",
"https://access.redhat.com/errata/RHSA-2020:5170",
"https://ubuntu.com/security/CVE-2020-11996",
"https://advisories.mageia.org/CVE-2020-11996.html",
"https://security.archlinux.org/CVE-2020-11996"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-11996"
],
"details": "A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.",
"id": "GSD-2020-11996",
"modified": "2023-12-13T01:22:05.616224Z",
"schema_version": "1.4.0"
}
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{
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{
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{
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"url": "https://www.debian.org/security/2020/dsa-4727"
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{
"name": "openSUSE-SU-2020:1051",
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{
"name": "[tomcat-users] 20201008 Is Tomcat7 supports HTTP2",
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"gitlab.com": {
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{
"affected_range": "[8.5.0,8.5.55],[9.0.0,9.0.36)",
"affected_versions": "All versions starting from 8.5.0 up to 8.5.55, all versions starting from 9.0.0 up to 9.0.36",
"cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-937"
],
"date": "2022-02-09",
"description": "A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.",
"fixed_versions": [
"8.5.56",
"9.0.36"
],
"identifier": "CVE-2020-11996",
"identifiers": [
"GHSA-53hp-jpwq-2jgq",
"CVE-2020-11996"
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"not_impacted": "All versions before 8.5.0, all versions after 8.5.55 before 9.0.0, all versions after 9.0.36",
"package_slug": "maven/org.apache.tomcat.embed/tomcat-embed-core",
"pubdate": "2022-02-09",
"solution": "Upgrade to versions 8.5.56, 9.0.36 or above.",
"title": "Uncontrolled Resource Consumption in Apache Tomcat",
"urls": [
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"https://security.netapp.com/advisory/ntap-20200709-0002/",
"https://usn.ubuntu.com/4596-1/",
"https://www.debian.org/security/2020/dsa-4727",
"https://www.oracle.com/security-alerts/cpujan2021.html",
"https://www.oracle.com/security-alerts/cpuoct2020.html",
"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00064.html",
"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00072.html",
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"uuid": "74aaad49-024b-4e06-9a2d-65f5fc75c101"
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{
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"cwe_ids": [
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"CWE-400",
"CWE-937"
],
"date": "2021-07-21",
"description": "A specially crafted sequence of `HTTP/2` requests sent to Apache Tomcat could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent `HTTP/2` connections, the server could become unresponsive.",
"fixed_versions": [
"8.5.56",
"9.0.36"
],
"identifier": "CVE-2020-11996",
"identifiers": [
"CVE-2020-11996"
],
"not_impacted": "All versions before 8.5.0, all versions after 8.5.55 before 9.0.0, all versions after 9.0.36",
"package_slug": "maven/org.apache.tomcat/coyote",
"pubdate": "2020-06-26",
"solution": "Upgrade to versions 8.5.56, 9.0.36 or above.",
"title": "Uncontrolled Resource Consumption",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-11996"
],
"uuid": "a1b91bfe-5a48-4208-8cdd-f591b8934df8"
},
{
"affected_range": "[8.5.0,8.5.55],[9.0.0,9.0.36)",
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"cvss_v2": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"cwe_ids": [
"CWE-1035",
"CWE-400",
"CWE-937"
],
"date": "2021-07-21",
"description": "A specially crafted sequence of `HTTP/2` requests sent to Apache Tomcat could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent `HTTP/2` connections, the server could become unresponsive.",
"fixed_versions": [
"8.5.56",
"9.0.36"
],
"identifier": "CVE-2020-11996",
"identifiers": [
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],
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"package_slug": "maven/org.apache.tomcat/tomcat-coyote",
"pubdate": "2020-06-26",
"solution": "Upgrade to versions 8.5.56, 9.0.36 or above.",
"title": "Uncontrolled Resource Consumption",
"urls": [
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],
"uuid": "eaf8e784-f920-4877-b6e7-654d25c0881b"
},
{
"affected_range": "[8.5.0,8.5.55],[9.0.0,9.0.36)",
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"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"cwe_ids": [
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"CWE-937"
],
"date": "2022-02-09",
"description": "A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.",
"fixed_versions": [
"8.5.56",
"9.0.36"
],
"identifier": "CVE-2020-11996",
"identifiers": [
"GHSA-53hp-jpwq-2jgq",
"CVE-2020-11996"
],
"not_impacted": "All versions before 8.5.0, all versions after 8.5.55 before 9.0.0, all versions after 9.0.36",
"package_slug": "maven/org.apache.tomcat/tomcat",
"pubdate": "2022-02-09",
"solution": "Upgrade to versions 8.5.56, 9.0.36 or above.",
"title": "Uncontrolled Resource Consumption in Apache Tomcat",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-11996",
"https://security.netapp.com/advisory/ntap-20200709-0002/",
"https://usn.ubuntu.com/4596-1/",
"https://www.debian.org/security/2020/dsa-4727",
"https://www.oracle.com/security-alerts/cpujan2021.html",
"https://www.oracle.com/security-alerts/cpuoct2020.html",
"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00064.html",
"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00072.html",
"https://github.com/advisories/GHSA-53hp-jpwq-2jgq"
],
"uuid": "6ec05f1c-3908-4688-a742-b3d9e72f776d"
}
]
},
"nvd.nist.gov": {
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},
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"obtainAllPrivilege": false,
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"severity": "MEDIUM",
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},
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"attackVector": "NETWORK",
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"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
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}
},
"lastModifiedDate": "2021-07-21T11:39Z",
"publishedDate": "2020-06-26T17:15Z"
}
}
}
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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
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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