msrc_cve-2024-21427
Vulnerability from csaf_microsoft
Published
2024-03-12 07:00
Modified
2024-04-25 07:00
Summary
Windows Kerberos Security Feature Bypass Vulnerability
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.
Customer Action
Required. The vulnerability documented by this CVE requires customer action to resolve.
{
"document": {
"acknowledgments": [
{
"names": [
"Jo Sutton with Catalyst IT"
]
},
{
"names": [
"\u003ca href=\"https://twitter.com/4ndr3w6s\"\u003eAndrew Schwartz\u003c/a\u003e with \u003ca href=\"https://www.trustedsec.com/\"\u003eTrustedSec\u003c/a\u003e and \u003ca href=\"https://twitter.com/exploitph\"\u003eCharlie Clark\u003c/a\u003e"
]
}
],
"aggregate_severity": {
"namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
"text": "Important"
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"category": "csaf_security_advisory",
"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"
},
{
"category": "general",
"text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
"title": "Customer Action"
}
],
"publisher": {
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"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2024-21427 Windows Kerberos Security Feature Bypass Vulnerability - HTML",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21427"
},
{
"category": "self",
"summary": "CVE-2024-21427 Windows Kerberos Security Feature Bypass Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2024/msrc_cve-2024-21427.json"
},
{
"category": "external",
"summary": "Microsoft Exploitability Index",
"url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
},
{
"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": "Windows Kerberos Security Feature Bypass Vulnerability",
"tracking": {
"current_release_date": "2024-04-25T07:00:00.000Z",
"generator": {
"date": "2025-05-03T00:46:37.515Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2024-21427",
"initial_release_date": "2024-03-12T07:00:00.000Z",
"revision_history": [
{
"date": "2024-03-12T07:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
},
{
"date": "2024-04-09T07:00:00.000Z",
"legacy_version": "2",
"number": "2",
"summary": "The following changes have been made: 1) In the Security Updates table, removed all supported client versions of Windows 10 and Windows 11 as they are not affected by this vulnerability. 2) To comprehensively address CVE-2024-21427 Microsoft has released April 2024 security updates for all affected versions of Windows Server 2012 R2, Windows Server 2016, Windows Server 2019, Windows Server 2022, and Windows Server 2022, 23H2 Edition. Microsoft strongly recommends that customers install the updates to be fully protected from the vulnerability. Customers whose systems are configured to receive automatic updates do not need to take any further action."
},
{
"date": "2024-04-25T07:00:00.000Z",
"legacy_version": "2.1",
"number": "3",
"summary": "Updated acknowledgment. This is an informational change only."
}
],
"status": "final",
"version": "3"
}
},
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"vulnerabilities": [
{
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"cwe": {
"id": "CWE-287",
"name": "Improper Authentication"
},
"notes": [
{
"category": "general",
"text": "Microsoft",
"title": "Assigning CNA"
},
{
"category": "faq",
"text": "Successful exploitation of this vulnerability requires an attacker to gather information specific to the environment and take additional actions prior to exploitation to prepare the target environment.",
"title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?"
},
{
"category": "faq",
"text": "The authentication feature could be bypassed as this vulnerability allows impersonation.",
"title": "What kind of security feature could be bypassed by successfully exploiting this vulnerability?"
}
],
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"10543",
"10816",
"10855",
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"2",
"3",
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},
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{
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"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21427"
},
{
"category": "self",
"summary": "CVE-2024-21427 Windows Kerberos Security Feature Bypass Vulnerability - CSAF",
"url": "https://msrc.microsoft.com/csaf/advisories/2024/msrc_cve-2024-21427.json"
}
],
"remediations": [
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"environmentalsScore": 0.0,
"exploitCodeMaturity": "UNPROVEN",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"remediationLevel": "OFFICIAL_FIX",
"reportConfidence": "CONFIRMED",
"scope": "UNCHANGED",
"temporalScore": 6.5,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
"version": "3.1"
},
"products": [
"1",
"2",
"3",
"4",
"5",
"6",
"7",
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]
}
],
"threats": [
{
"category": "impact",
"details": "Security Feature Bypass"
},
{
"category": "exploit_status",
"details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
}
],
"title": "Windows Kerberos Security Feature Bypass Vulnerability"
}
]
}
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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.
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