msrc_cve-2018-21035
Vulnerability from csaf_microsoft
Published
2020-02-02 00:00
Modified
2021-12-16 00:00
Summary
In Qt through 5.14.1 the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).
Notes
Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
{
"document": {
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2018-21035 In Qt through 5.14.1 the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption). - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2018-21035.json"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "In Qt through 5.14.1 the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).",
"tracking": {
"current_release_date": "2021-12-16T00:00:00.000Z",
"generator": {
"date": "2025-10-19T17:51:18.714Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2018-21035",
"initial_release_date": "2020-02-02T00:00:00.000Z",
"revision_history": [
{
"date": "2021-10-01T00:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2021-12-16T00:00:00.000Z",
"legacy_version": "1.1",
"number": "2",
"summary": "Added qt5-qtsvg to CBL-Mariner 2.0"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "1.0",
"product": {
"name": "CBL Mariner 1.0",
"product_id": "16820"
}
},
{
"category": "product_version",
"name": "2.0",
"product": {
"name": "CBL Mariner 2.0",
"product_id": "17086"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccm1 qt5-qtsvg 5.12.11-2",
"product": {
"name": "\u003ccm1 qt5-qtsvg 5.12.11-2",
"product_id": "2"
}
},
{
"category": "product_version",
"name": "cm1 qt5-qtsvg 5.12.11-2",
"product": {
"name": "cm1 qt5-qtsvg 5.12.11-2",
"product_id": "16965"
}
},
{
"category": "product_version_range",
"name": "\u003ccbl2 qt5-qtsvg 5.12.11-3",
"product": {
"name": "\u003ccbl2 qt5-qtsvg 5.12.11-3",
"product_id": "3"
}
},
{
"category": "product_version",
"name": "cbl2 qt5-qtsvg 5.12.11-3",
"product": {
"name": "cbl2 qt5-qtsvg 5.12.11-3",
"product_id": "16857"
}
}
],
"category": "product_name",
"name": "qt5-qtsvg"
},
{
"category": "product_name",
"name": "cbl2 qt5-qtbase 5.12.11-15",
"product": {
"name": "cbl2 qt5-qtbase 5.12.11-15",
"product_id": "1"
}
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccm1 qt5-qtsvg 5.12.11-2 as a component of CBL Mariner 1.0",
"product_id": "16820-2"
},
"product_reference": "2",
"relates_to_product_reference": "16820"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cm1 qt5-qtsvg 5.12.11-2 as a component of CBL Mariner 1.0",
"product_id": "16965-16820"
},
"product_reference": "16965",
"relates_to_product_reference": "16820"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccbl2 qt5-qtsvg 5.12.11-3 as a component of CBL Mariner 2.0",
"product_id": "17086-3"
},
"product_reference": "3",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cbl2 qt5-qtsvg 5.12.11-3 as a component of CBL Mariner 2.0",
"product_id": "16857-17086"
},
"product_reference": "16857",
"relates_to_product_reference": "17086"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cbl2 qt5-qtbase 5.12.11-15 as a component of CBL Mariner 2.0",
"product_id": "17086-1"
},
"product_reference": "1",
"relates_to_product_reference": "17086"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2018-21035",
"cwe": {
"id": "CWE-770",
"name": "Allocation of Resources Without Limits or Throttling"
},
"flags": [
{
"label": "component_not_present",
"product_ids": [
"17086-1"
]
}
],
"notes": [
{
"category": "general",
"text": "mitre",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"16965-16820",
"16857-17086"
],
"known_affected": [
"16820-2",
"17086-3"
],
"known_not_affected": [
"17086-1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2018-21035 In Qt through 5.14.1 the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption). - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2018-21035.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2021-10-01T00:00:00.000Z",
"details": "5.12.11-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"16820-2"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
},
{
"category": "vendor_fix",
"date": "2021-10-01T00:00:00.000Z",
"details": "5.12.11-3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"17086-3"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"environmentalsScore": 0.0,
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 7.5,
"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"
},
"products": [
"16820-2",
"17086-3"
]
}
],
"title": "In Qt through 5.14.1 the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption)."
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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