GHSA-8G9C-28FC-MCX2

Vulnerability from github – Published: 2024-01-09 18:28 – Updated: 2024-04-15 19:42
VLAI?
Summary
Duplicate Advisory: Microsoft Identity Denial of service vulnerability
Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-59j7-ghrg-fj52. This link is maintained to preserve external references.

Original Description

Impact

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.

It's important to note that the attacker must have access to the public encrypt key registered with the IDP(Entra ID) for successful exploitation.

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? 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.

Patches

The vulnerability has been fixed. Users should update all their Microsoft.IdentityModel versions to 7.1.2 (for 7x) or higher, 6.34.0 (for 6x) or higher, and 5.7.0 (for 5x).

Workarounds

No, users must upgrade.

References

https://aka.ms/IdentityModel/Jan2024/zip

Severity ?
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.IdentityModel.JsonWebTokens"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.IdentityModel.JsonWebTokens"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.5.0"
            },
            {
              "fixed": "6.34.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.IdentityModel.JsonWebTokens"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0-preview"
            },
            {
              "fixed": "7.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "System.IdentityModel.Tokens.Jwt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "System.IdentityModel.Tokens.Jwt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.5.0"
            },
            {
              "fixed": "6.34.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "System.IdentityModel.Tokens.Jwt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0-preview"
            },
            {
              "fixed": "7.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-01-09T18:28:03Z",
    "nvd_published_at": "2024-01-09T19:15:12Z",
    "severity": "MODERATE"
  },
  "details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-59j7-ghrg-fj52. This link is maintained to preserve external references.\n\n### Original Description\n\n### Impact\nAn 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.\n\nIt\u0027s important to note that the attacker must have access to the public encrypt key registered with the IDP(Entra ID) for successful exploitation.\n\n_According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?_\nA 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.\n\n### Patches\nThe vulnerability has been fixed. Users should update **all** their Microsoft.IdentityModel versions to 7.1.2 (for 7x) or higher, 6.34.0 (for 6x) or higher, and 5.7.0 (for 5x).\n\n### Workarounds\nNo, users must upgrade.\n\n### References\nhttps://aka.ms/IdentityModel/Jan2024/zip",
  "id": "GHSA-8g9c-28fc-mcx2",
  "modified": "2024-04-15T19:42:18Z",
  "published": "2024-01-09T18:28:03Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/security/advisories/GHSA-8g9c-28fc-mcx2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-21319"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/5.7.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/6.34.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet/releases/tag/7.1.2"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21319"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Duplicate Advisory: Microsoft Identity Denial of service vulnerability",
  "withdrawn": "2024-04-11T20:42:09Z"
}


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  • 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.
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  • 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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