FKIE_CVE-2023-35391

Vulnerability from fkie_nvd - Published: 2023-08-08 19:15 - Updated: 2026-06-17 06:04
Severity
6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391Patch, Vendor Advisory
Impacted products
Vendor Product Version
microsoft .net *
microsoft .net *
microsoft asp.net_core *
microsoft visual_studio_2022 *
microsoft visual_studio_2022 *
microsoft visual_studio_2022 *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2022 version 17.2",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "17.2.18",
              "status": "affected",
              "version": "17.2.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2022 version 17.4",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "17.4.10",
              "status": "affected",
              "version": "17.4.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Visual Studio 2022 version 17.6",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "17.6.6",
              "status": "affected",
              "version": "17.6.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "Unknown"
          ],
          "product": "ASP.NET Core 2.1",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "2.1.40",
              "status": "affected",
              "version": "2.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "Unknown"
          ],
          "product": ".NET 6.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "6.0.21",
              "status": "affected",
              "version": "6.0.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "platforms": [
            "Unknown"
          ],
          "product": ".NET 7.0",
          "vendor": "Microsoft",
          "versions": [
            {
              "lessThan": "7.0.10",
              "status": "affected",
              "version": "7.0.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AA257401-7276-4427-8692-7B5A6495F182",
              "versionEndExcluding": "6.0.21",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C2239C44-5436-4968-959B-C686E0FAECD1",
              "versionEndExcluding": "7.0.10",
              "versionStartIncluding": "7.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "65CCEE15-3742-40B0-9241-1779929F529F",
              "versionEndExcluding": "2.1.40",
              "versionStartIncluding": "2.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DADAE1CA-1303-4B24-A9EC-E79A83088E49",
              "versionEndExcluding": "17.2.18",
              "versionStartIncluding": "17.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A2A151F0-EE6A-4D89-BF83-74CCAA76E373",
              "versionEndExcluding": "17.4.10",
              "versionStartIncluding": "17.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "FB465155-CEDD-48E5-8B58-AF49B8FAF504",
              "versionEndExcluding": "17.6.6",
              "versionStartIncluding": "17.6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ASP.NET Core SignalR and Visual Studio Information Disclosure Vulnerability"
    }
  ],
  "id": "CVE-2023-35391",
  "lastModified": "2026-06-17T06:04:50.713",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 3.6,
        "source": "secure@microsoft.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-35391",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-11T18:55:14.681715Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-08-08T19:15:09.940",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-35391"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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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

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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.


Detection rules are retrieved from Rulezet.