GSD-2020-1918

Vulnerability from gsd - Updated: 2023-12-13 01:21
Details
In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2020-1918",
    "description": "In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.",
    "id": "GSD-2020-1918"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-1918"
      ],
      "details": "In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.",
      "id": "GSD-2020-1918",
      "modified": "2023-12-13T01:21:58.390133Z",
      "schema_version": "1.4.0"
    }
  },
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        "DATE_ASSIGNED": "2020-11-15",
        "ID": "CVE-2020-1918",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
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                  {
                    "product_name": "HHVM",
                    "version": {
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                          "version_affected": "!\u003e=",
                          "version_value": "4.98.1"
                        },
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                          "version_affected": "=",
                          "version_value": "4.98.0"
                        },
                        {
                          "version_affected": "!\u003e=",
                          "version_value": "4.97.1"
                        },
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                          "version_value": "4.97.0"
                        },
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                          "version_affected": "!\u003e=",
                          "version_value": "4.96.1"
                        },
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                          "version_value": "4.96.0"
                        },
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                          "version_affected": "!\u003e=",
                          "version_value": "4.95.1"
                        },
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                        },
                        {
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                        },
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                        },
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                          "version_value": "4.93.2"
                        },
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                        },
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                        },
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                          "version_value": "4.57.0"
                        },
                        {
                          "version_affected": "!\u003e=",
                          "version_value": "4.56.3"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_value": "4.56.3"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Facebook"
            }
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        }
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Buffer Under-read (CWE-127)"
              }
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      },
      "references": {
        "reference_data": [
          {
            "name": "https://hhvm.com/blog/2021/02/25/security-update.html",
            "refsource": "MISC",
            "url": "https://hhvm.com/blog/2021/02/25/security-update.html"
          },
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            "url": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca"
          }
        ]
      }
    },
    "nvd.nist.gov": {
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                "cpe23Uri": "cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*",
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                "versionEndExcluding": "4.56.3",
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              },
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                "cpe_name": [],
                "versionEndExcluding": "4.80.2",
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              },
              {
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                "cpe_name": [],
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              },
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                "cpe_name": [],
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              },
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            ],
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        "description": {
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          ]
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        "problemtype": {
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              "name": "https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca",
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              "url": "https://hhvm.com/blog/2021/02/25/security-update.html"
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        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "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
        }
      },
      "lastModifiedDate": "2021-03-15T15:53Z",
      "publishedDate": "2021-03-10T16:15Z"
    }
  }
}


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Sightings

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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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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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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