GSD-2021-42306
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
Azure Active Directory Information Disclosure Vulnerability
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-42306",
"description": "Azure Active Directory Information Disclosure Vulnerability",
"id": "GSD-2021-42306"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-42306"
],
"details": "Azure Active Directory Information Disclosure Vulnerability",
"id": "GSD-2021-42306",
"modified": "2023-12-13T01:23:06.882841Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "secure@microsoft.com",
"ID": "CVE-2021-42306",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Azure Automation",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "1.0.0",
"version_value": "publication"
}
]
}
},
{
"product_name": "Azure Active Directory",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "N/A"
}
]
}
},
{
"product_name": "Azure Site Recovery",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "N/A"
}
]
}
},
{
"product_name": "Azure Migrate",
"version": {
"version_data": [
{
"version_affected": "=",
"version_value": "N/A"
}
]
}
}
]
},
"vendor_name": "Microsoft"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "\u003cp\u003eAn information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authentication certificate \u003ca href=\"https://docs.microsoft.com/en-us/graph/api/resources/keycredential?view=graph-rest-1.0\"\u003ekeyCredential\u003c/a\u003e\u202f on an Azure AD \u003ca href=\"https://docs.microsoft.com/en-us/azure/active-directory/develop/app-objects-and-service-principals\"\u003eApplication or Service Principal\u003c/a\u003e (which is not recommended). This vulnerability allows a user or service in the tenant with application read access to read the private key data that was added to the application.\u003c/p\u003e\n\u003cp\u003eAzure AD\u202faddressed this vulnerability by preventing disclosure of any private key\u202fvalues added\u202fto the application.\u003c/p\u003e\n\u003cp\u003eMicrosoft has identified services that could manifest this vulnerability, and steps that customers should take to be protected. Refer to the FAQ section for more information.\u003c/p\u003e\n\u003cp\u003eFor more details on this issue, please refer to the \u003ca href=\"https://aka.ms/CVE-2021-42306-AAD\"\u003eMSRC Blog Entry\u003c/a\u003e.\u003c/p\u003e\n"
}
]
},
"impact": {
"cvss": [
{
"baseScore": 8.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C",
"version": "3.1"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Elevation of Privilege"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306",
"refsource": "MISC",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:azure_active_directory:*:*:*:*:*:*:*:*",
"matchCriteriaId": "E330A501-E24E-4832-AC8C-D36F3057A2F1",
"versionEndExcluding": "2021-10-30",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:azure_active_site_recovery:*:*:*:*:*:*:*:*",
"matchCriteriaId": "671F015B-9F9C-424C-AD6F-5FA7E6AD79C4",
"versionEndExcluding": "2021-11-01",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:azure_automation:*:*:*:*:*:*:*:*",
"matchCriteriaId": "30062F8C-2A4B-4ACB-AD96-81B056086D3C",
"versionEndExcluding": "2021-10-15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:azure_migrate:*:*:*:*:*:*:*:*",
"matchCriteriaId": "87634328-1533-4851-954C-FF2F2A7F0B5F",
"versionEndExcluding": "2021-11-02",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "\u003cp\u003eAn information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authentication certificate \u003ca href=\"https://docs.microsoft.com/en-us/graph/api/resources/keycredential?view=graph-rest-1.0\"\u003ekeyCredential\u003c/a\u003e\u202f on an Azure AD \u003ca href=\"https://docs.microsoft.com/en-us/azure/active-directory/develop/app-objects-and-service-principals\"\u003eApplication or Service Principal\u003c/a\u003e (which is not recommended). This vulnerability allows a user or service in the tenant with application read access to read the private key data that was added to the application.\u003c/p\u003e\n\u003cp\u003eAzure AD\u202faddressed this vulnerability by preventing disclosure of any private key\u202fvalues added\u202fto the application.\u003c/p\u003e\n\u003cp\u003eMicrosoft has identified services that could manifest this vulnerability, and steps that customers should take to be protected. Refer to the FAQ section for more information.\u003c/p\u003e\n\u003cp\u003eFor more details on this issue, please refer to the \u003ca href=\"https://aka.ms/CVE-2021-42306-AAD\"\u003eMSRC Blog Entry\u003c/a\u003e.\u003c/p\u003e\n"
},
{
"lang": "es",
"value": "Una vulnerabilidad de Divulgaci\u00f3n de Informaci\u00f3n de Azure Active Directory"
}
],
"id": "CVE-2021-42306",
"lastModified": "2023-12-28T16:15:59.377",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"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,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2,
"source": "secure@microsoft.com",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
},
"published": "2021-11-24T01:15:08.363",
"references": [
{
"source": "secure@microsoft.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42306"
}
],
"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-522"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
}
}
}
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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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