gsd-2020-16969
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages, aka 'Microsoft Exchange Information Disclosure Vulnerability'.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-16969",
"description": "An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages, aka \u0027Microsoft Exchange Information Disclosure Vulnerability\u0027.",
"id": "GSD-2020-16969"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-16969"
],
"details": "An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages, aka \u0027Microsoft Exchange Information Disclosure Vulnerability\u0027.",
"id": "GSD-2020-16969",
"modified": "2023-12-13T01:21:46.262652Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "secure@microsoft.com",
"ID": "CVE-2020-16969",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Microsoft Exchange Server 2019 Cumulative Update 6",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "15.02.0",
"version_value": "publication"
}
]
}
},
{
"product_name": "Microsoft Exchange Server 2016 Cumulative Update 17",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "15.01.0",
"version_value": "publication"
}
]
}
},
{
"product_name": "Microsoft Exchange Server 2019 Cumulative Update 7",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "15.02.0",
"version_value": "publication"
}
]
}
},
{
"product_name": "Microsoft Exchange Server 2016 Cumulative Update 18",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "15.01.0",
"version_value": "publication"
}
]
}
},
{
"product_name": "Microsoft Exchange Server 2013 Cumulative Update 23",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "15.00.0",
"version_value": "publication"
}
]
}
}
]
},
"vendor_name": "Microsoft"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "\u003cp\u003eAn information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker could include specially crafted OWA messages that could be loaded, without warning or filtering, from the attacker-controlled URL. This callback vector provides an information disclosure tactic used in web beacons and other types of tracking systems.\u003c/p\u003e\n\u003cp\u003eThe security update corrects the way that Exchange handles these token validations.\u003c/p\u003e\n"
}
]
},
"impact": {
"cvss": [
{
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C",
"version": "3.1"
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Information Disclosure"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16969",
"refsource": "MISC",
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16969"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*",
"matchCriteriaId": "DA166F2A-D83B-4D50-AD0B-668D813E0585",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_17:*:*:*:*:*:*",
"matchCriteriaId": "079E1E3F-FF25-4B0D-AC98-191D6455A014",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_18:*:*:*:*:*:*",
"matchCriteriaId": "29805EC7-6403-44B9-91EC-109C087E98EB",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_6:*:*:*:*:*:*",
"matchCriteriaId": "D4AB3C25-CEA8-4D66-AEE4-953C8B17911A",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:microsoft:exchange_server:2019:cumulative_update_7:*:*:*:*:*:*",
"matchCriteriaId": "36CE5C6D-9A04-41F5-AE7C-265779833649",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "\u003cp\u003eAn information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker could include specially crafted OWA messages that could be loaded, without warning or filtering, from the attacker-controlled URL. This callback vector provides an information disclosure tactic used in web beacons and other types of tracking systems.\u003c/p\u003e\n\u003cp\u003eThe security update corrects the way that Exchange handles these token validations.\u003c/p\u003e\n"
},
{
"lang": "es",
"value": "Se presenta una vulnerabilidad de divulgaci\u00f3n de informaci\u00f3n en como Microsoft Exchange comprueba los tokens cuando maneja determinados mensajes, tambi\u00e9n se conoce como \"Microsoft Exchange Information Disclosure Vulnerability\""
}
],
"id": "CVE-2020-16969",
"lastModified": "2023-12-31T20:15:59.407",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.7,
"source": "secure@microsoft.com",
"type": "Primary"
},
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
},
"published": "2020-10-16T23:15:16.743",
"references": [
{
"source": "secure@microsoft.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16969"
}
],
"sourceIdentifier": "secure@microsoft.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
}
}
}
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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.
- 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.