msrc_cve-2024-21319
Vulnerability from csaf_microsoft
Published
2024-01-09 08:00
Modified
2024-01-09 08:00
Summary
Microsoft Identity Denial of service 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.


To clipboard 

{
   document: {
      acknowledgments: [
         {
            names: [
               "Morgan Brown with Microsoft",
            ],
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            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",
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            text: "Required. The vulnerability documented by this CVE requires customer action to resolve.",
            title: "Customer Action",
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         name: "Microsoft Security Response Center",
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            url: "https://www.first.org/cvss",
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      title: "Microsoft Identity Denial of service vulnerability",
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         cve: "CVE-2024-21319",
         cwe: {
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            name: "Improper Input Validation",
         },
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               category: "general",
               text: "Microsoft",
               title: "Assigning CNA",
            },
            {
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               text: "The attacker must have access to the public encrypt key registered with the IDP(Entra ID) for successful exploitation.",
               title: "According to the CVSS metric, privileges required is high (PR:H).  What does that mean for this vulnerability?",
            },
            {
               category: "faq",
               text: "An attacker could exploit this vulnerability by crafting a malicious JSON Web Encryption (JWE) token with a high compression ratio. This token, when processed by a server, leads to excessive memory allocation and processing time during decompression, causing a denial-of-service (DoS) condition.\nIt's important to note that the attacker must have access to the public key registered with the IDP(AAD) for successful exploitation.",
               title: "How could an attacker exploit this vulnerability?",
            },
            {
               category: "faq",
               text: "A scope change (S:C) in the CVSS metric indicates that successful exploitation of this vulnerability could extend beyond the immediate processing of malicious tokens, affecting the overall availability of the system by causing a denial-of-service (DoS) condition.",
               title: "According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?",
            },
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            },
            {
               category: "self",
               summary: "CVE-2024-21319 Microsoft Identity Denial of service vulnerability - CSAF",
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         ],
         scores: [
            {
               cvss_v3: {
                  attackComplexity: "LOW",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 6.8,
                  baseSeverity: "MEDIUM",
                  confidentialityImpact: "NONE",
                  environmentalsScore: 0,
                  exploitCodeMaturity: "UNPROVEN",
                  integrityImpact: "NONE",
                  privilegesRequired: "HIGH",
                  remediationLevel: "OFFICIAL_FIX",
                  reportConfidence: "CONFIRMED",
                  scope: "CHANGED",
                  temporalScore: 5.9,
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C",
                  version: "3.1",
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                  "12",
                  "13",
               ],
            },
         ],
         threats: [
            {
               category: "impact",
               details: "Denial of Service",
            },
            {
               category: "exploit_status",
               details: "Exploited:No;Latest Software Release:Exploitation Less Likely",
            },
         ],
         title: "Microsoft Identity Denial of service vulnerability",
      },
   ],
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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