GSD-2020-13943
Vulnerability from gsd - Updated: 2023-12-13 01:21Details
If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-13943",
"description": "If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.",
"id": "GSD-2020-13943",
"references": [
"https://www.suse.com/security/cve/CVE-2020-13943.html",
"https://www.debian.org/security/2021/dsa-4835",
"https://access.redhat.com/errata/RHSA-2021:5134",
"https://access.redhat.com/errata/RHSA-2021:4012",
"https://access.redhat.com/errata/RHSA-2021:0495",
"https://access.redhat.com/errata/RHSA-2021:0494",
"https://advisories.mageia.org/CVE-2020-13943.html",
"https://ubuntu.com/security/CVE-2020-13943"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
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"id": "GSD-2020-13943",
"modified": "2023-12-13T01:21:46.829234Z",
"schema_version": "1.4.0"
}
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"refsource": "MISC",
"url": "https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E"
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"name": "[debian-lts-announce] 20201014 [SECURITY] [DLA 2407-1] tomcat8 security update",
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{
"affected_range": "[9.0.0,9.0.37),[8.5.0,8.5.57)",
"affected_versions": "All versions starting from 9.0.0 before 9.0.37, all versions starting from 8.5.0 before 8.5.57",
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],
"date": "2022-02-09",
"description": "If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.",
"fixed_versions": [
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],
"identifier": "CVE-2020-13943",
"identifiers": [
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"package_slug": "maven/org.apache.tomcat.embed/tomcat-embed-core",
"pubdate": "2022-02-09",
"solution": "Upgrade to versions 9.0.37, 8.5.57 or above.",
"title": "Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat",
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"https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E",
"https://lists.debian.org/debian-lts-announce/2020/10/msg00019.html",
"https://security.netapp.com/advisory/ntap-20201016-0007/",
"https://www.debian.org/security/2021/dsa-4835",
"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00002.html",
"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00021.html",
"https://www.oracle.com/security-alerts/cpuApr2021.html",
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],
"date": "2021-06-14",
"description": "If an `HTTP/2` client connecting to Apache Tomcat to M1 to to exceeded the agreed maximum number of concurrent streams for a connection (in violation of the `HTTP/2` protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including `HTTP/2` pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.",
"fixed_versions": [],
"identifier": "CVE-2020-13943",
"identifiers": [
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"not_impacted": "",
"package_slug": "maven/org.apache.tomcat/coyote",
"pubdate": "2020-10-12",
"solution": "Unfortunately, there is no solution available yet.",
"title": "HTTP Request Smuggling",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-13943"
],
"uuid": "11cbbf92-46d4-4e90-8fca-a08bb77922ed"
},
{
"affected_range": "[8.5.0,8.5.57],[9.0.0,9.0.37],[10.0.0]",
"affected_versions": "All versions starting from 8.5.0 up to 8.5.57, all versions starting from 9.0.0 up to 9.0.37, version 10.0.0",
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"date": "2021-06-14",
"description": "If a `HTTP/2` client connecting to Apache Tomcat exceeded the agreed maximum number of concurrent streams for a connection (in violation of the `HTTP/2` protocol), it was possible that a subsequent request made on that connection could contain HTTP headers from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.",
"fixed_versions": [
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"9.0.38"
],
"identifier": "CVE-2020-13943",
"identifiers": [
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],
"not_impacted": "All versions before 8.5.0, all versions after 8.5.57 before 9.0.0, all versions after 9.0.37 before 10.0.0, all versions after 10.0.0",
"package_slug": "maven/org.apache.tomcat/tomcat-coyote",
"pubdate": "2020-10-12",
"solution": "Upgrade to versions 8.5.58, 9.0.38 or above.",
"title": "HTTP Request Smuggling",
"urls": [
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"uuid": "fe2fc6d1-377a-424f-b9b4-8204517ef1e4"
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{
"affected_range": "[10.0.0-M1,10.0.0-M6],[9.0.0-M1,9.0.37),[8.5.0,8.5.57)",
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"date": "2022-02-09",
"description": "If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources.",
"fixed_versions": [
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"10.0.0-M7",
"10.0.0-M7",
"8.5.57"
],
"identifier": "CVE-2020-13943",
"identifiers": [
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],
"not_impacted": "All versions before 10.0.0-m1, all versions after 10.0.0-m6, all versions before 9.0.0-m1, all versions starting from 9.0.37, all versions before 8.5.0, all versions starting from 8.5.57",
"package_slug": "maven/org.apache.tomcat/tomcat",
"pubdate": "2022-02-09",
"solution": "Upgrade to versions 10.0.0-M7, 10.0.0-M7, 10.0.0-M7, 8.5.57 or above.",
"title": "Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat",
"urls": [
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"https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E",
"https://lists.debian.org/debian-lts-announce/2020/10/msg00019.html",
"https://security.netapp.com/advisory/ntap-20201016-0007/",
"https://www.debian.org/security/2021/dsa-4835",
"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00002.html",
"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00021.html",
"https://www.oracle.com/security-alerts/cpuApr2021.html",
"https://github.com/advisories/GHSA-f268-65qc-98vg"
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{
"name": "https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E",
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},
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"tags": [
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],
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},
{
"name": "https://security.netapp.com/advisory/ntap-20201016-0007/",
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"tags": [
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},
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},
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},
"impact": {
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"acInsufInfo": false,
"cvssV2": {
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"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 4.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 1.4
}
},
"lastModifiedDate": "2023-01-31T21:44Z",
"publishedDate": "2020-10-12T14:15Z"
}
}
}
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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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