github - ghsa-5653-437f-5hmc

GHSA-5653-437F-5HMC

Vulnerability from github – Published: 2022-04-12 21:29 – Updated: 2022-04-12 21:29

Summary

Denial of service

Details

The use of String.to_atom/1 in PowAssent is susceptible to denial of service attacks. In PowAssent.Phoenix.AuthorizationController a value is fetched from the user provided params, and String.to_atom/1 is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash.

Severity ?

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Hex",
        "name": "pow_assent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2019-16764"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-04-12T21:29:30Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash.",
  "id": "GHSA-5653-437f-5hmc",
  "modified": "2022-04-12T21:29:30Z",
  "published": "2022-04-12T21:29:30Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-16764"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pow-auth/pow_assent"
    },
    {
      "type": "WEB",
      "url": "https://hex.pm/packages/pow_assent"
    },
    {
      "type": "WEB",
      "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Denial of service"
}

CVE-2019-16764 (GCVE-0-2019-16764)

Vulnerability from cvelistv5 – Published: 2019-11-25 17:11 – Updated: 2024-08-05 01:24

Summary

The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M

References

URL

Tags

	https://github.com/pow-auth/pow_assent/security/a…	x_refsource_CONFIRM
	https://hex.pm/packages/pow_assent	x_refsource_MISC
	http://erlang.org/doc/efficiency_guide/commoncave…	x_refsource_MISC
	https://github.com/pow-auth/pow_assent/commit/026…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	pow-auth	pow_assent	Affected: < 0.4.4 , < 0.4.4 (custom)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T01:24:47.215Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hex.pm/packages/pow_assent"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "pow_assent",
          "vendor": "pow-auth",
          "versions": [
            {
              "lessThan": "0.4.4",
              "status": "affected",
              "version": "\u003c 0.4.4",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400 Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2019-11-25T17:11:19",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hex.pm/packages/pow_assent"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"
        }
      ],
      "source": {
        "advisory": "GHSA-368c-xvrv-x986",
        "discovery": "UNKNOWN"
      },
      "title": "PowAssent is susceptible to denial of service attacks",
      "workarounds": [
        {
          "lang": "en",
          "value": "A plug can be used to validate conn.params[\u0026quot;provider\u0026quot;] before it reaches the PowAssent.Phoenix.AuthorizationController."
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2019-16764",
          "STATE": "PUBLIC",
          "TITLE": "PowAssent is susceptible to denial of service attacks"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "pow_assent",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_name": "\u003c 0.4.4",
                            "version_value": "0.4.4"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "pow-auth"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-400 Uncontrolled Resource Consumption"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986",
              "refsource": "CONFIRM",
              "url": "https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986"
            },
            {
              "name": "https://hex.pm/packages/pow_assent",
              "refsource": "MISC",
              "url": "https://hex.pm/packages/pow_assent"
            },
            {
              "name": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1",
              "refsource": "MISC",
              "url": "http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1"
            },
            {
              "name": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf",
              "refsource": "MISC",
              "url": "https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-368c-xvrv-x986",
          "discovery": "UNKNOWN"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "A plug can be used to validate conn.params[\u0026quot;provider\u0026quot;] before it reaches the PowAssent.Phoenix.AuthorizationController."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2019-16764",
    "datePublished": "2019-11-25T17:11:19",
    "dateReserved": "2019-09-24T00:00:00",
    "dateUpdated": "2024-08-05T01:24:47.215Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-5653-437F-5HMC

CVE-2019-16764 (GCVE-0-2019-16764)

Tags

Sightings

Nomenclature