CVE-2020-15704 (GCVE-0-2020-15704)

Vulnerability from cvelistv5 – Published: 2020-08-31 23:15 – Updated: 2024-09-17 00:35
VLAI?
Title
pppd arbitrary file read information disclosure vulnerability
Summary
The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
Assigner
References
https://ubuntu.com/security/notices/USN-4451-1 vendor-advisoryx_refsource_UBUNTU
https://ubuntu.com/security/notices/USN-4451-2 vendor-advisoryx_refsource_UBUNTU
Impacted products
Vendor Product Version
Canonical ppp Affected: 2.4.5 , < 2.4.5-5ubuntu1.4 (custom)
Affected: 2.4.7 , < 2.4.7-1+2ubuntu1.16.04.3 (custom)
Create a notification for this product.
Date Public ?
2020-08-04 00:00
Credits
Thomas Chauchefoin working with Trend Micro's Zero Day Initiative
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T13:22:30.747Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://ubuntu.com/security/notices/USN-4451-1"
          },
          {
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://ubuntu.com/security/notices/USN-4451-2"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "ppp",
          "vendor": "Canonical",
          "versions": [
            {
              "changes": [
                {
                  "at": "2.4.5-5.1ubuntu2.3+esm2",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2.4.5-5ubuntu1.4",
              "status": "affected",
              "version": "2.4.5",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "2.4.7-2+2ubuntu1.3",
                  "status": "unaffected"
                },
                {
                  "at": "2.4.7-2+4.1ubuntu5.1",
                  "status": "unaffected"
                },
                {
                  "at": "2.4.7-2+4.1ubuntu6",
                  "status": "unaffected"
                }
              ],
              "lessThan": "2.4.7-1+2ubuntu1.16.04.3",
              "status": "affected",
              "version": "2.4.7",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Thomas Chauchefoin working with Trend Micro\u0027s Zero Day Initiative"
        }
      ],
      "datePublic": "2020-08-04T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200 Information Exposure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-08-31T23:15:14.000Z",
        "orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
        "shortName": "canonical"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://ubuntu.com/security/notices/USN-4451-1"
        },
        {
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://ubuntu.com/security/notices/USN-4451-2"
        }
      ],
      "source": {
        "advisory": "https://usn.ubuntu.com/USN-4451-1/",
        "discovery": "EXTERNAL"
      },
      "title": "pppd arbitrary file read information disclosure vulnerability",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "AKA": "",
          "ASSIGNER": "security@ubuntu.com",
          "DATE_PUBLIC": "2020-08-04T17:00:00.000Z",
          "ID": "CVE-2020-15704",
          "STATE": "PUBLIC",
          "TITLE": "pppd arbitrary file read information disclosure vulnerability"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "ppp",
                      "version": {
                        "version_data": [
                          {
                            "platform": "",
                            "version_affected": "\u003c",
                            "version_name": "2.4.5",
                            "version_value": "2.4.5-5ubuntu1.4"
                          },
                          {
                            "platform": "",
                            "version_affected": "\u003c",
                            "version_name": "2.4.5",
                            "version_value": "2.4.5-5.1ubuntu2.3+esm2"
                          },
                          {
                            "platform": "",
                            "version_affected": "\u003c",
                            "version_name": "2.4.7",
                            "version_value": "2.4.7-1+2ubuntu1.16.04.3"
                          },
                          {
                            "platform": "",
                            "version_affected": "\u003c",
                            "version_name": "2.4.7",
                            "version_value": "2.4.7-2+2ubuntu1.3"
                          },
                          {
                            "platform": "",
                            "version_affected": "\u003c",
                            "version_name": "2.4.7",
                            "version_value": "2.4.7-2+4.1ubuntu5.1"
                          },
                          {
                            "platform": "",
                            "version_affected": "\u003c",
                            "version_name": "2.4.7",
                            "version_value": "2.4.7-2+4.1ubuntu6"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Canonical"
              }
            ]
          }
        },
        "configuration": [],
        "credit": [
          {
            "lang": "eng",
            "value": "Thomas Chauchefoin working with Trend Micro\u0027s Zero Day Initiative"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504."
            }
          ]
        },
        "exploit": [],
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-200 Information Exposure"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://ubuntu.com/security/notices/USN-4451-1",
              "refsource": "UBUNTU",
              "url": "https://ubuntu.com/security/notices/USN-4451-1"
            },
            {
              "name": "https://ubuntu.com/security/notices/USN-4451-2",
              "refsource": "UBUNTU",
              "url": "https://ubuntu.com/security/notices/USN-4451-2"
            }
          ]
        },
        "solution": [],
        "source": {
          "advisory": "https://usn.ubuntu.com/USN-4451-1/",
          "defect": [],
          "discovery": "EXTERNAL"
        },
        "work_around": []
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
    "assignerShortName": "canonical",
    "cveId": "CVE-2020-15704",
    "datePublished": "2020-08-31T23:15:14.261Z",
    "dateReserved": "2020-07-14T00:00:00.000Z",
    "dateUpdated": "2024-09-17T00:35:29.021Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-15704",
      "date": "2026-05-03",
      "epss": "0.00105",
      "percentile": "0.2812"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-15704\",\"sourceIdentifier\":\"security@ubuntu.com\",\"published\":\"2020-09-01T00:15:09.907\",\"lastModified\":\"2024-11-21T05:06:03.430\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.\"},{\"lang\":\"es\",\"value\":\"El proceso hijo modprobe en el archivo de parche ./debian/patches/load_ppp_generic_if_needed manej\u00f3 incorrectamente la carga del m\u00f3dulo.\u0026#xa0;Un atacante local que no sea root podr\u00eda explotar la variable de entorno MODPROBE_OPTIONS para leer archivos root arbitrarios.\u0026#xa0;Corregido en las versiones 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6.\u0026#xa0;Fue ZDI-CAN-11504\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@ubuntu.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":2.1,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security@ubuntu.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-20\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.7-1\\\\+ubuntu1.16.04.3\",\"matchCriteriaId\":\"E60D6693-6626-4A52-9850-0C4B1B6832B3\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.7-2\\\\+2ubuntu1.3\",\"matchCriteriaId\":\"B437B873-DB91-41A3-908F-2F96CD4442B7\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.7-2\\\\+4.1ubuntu5.1\",\"matchCriteriaId\":\"B11FD69C-C04C-4021-9B6F-4332452438FF\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"902B8056-9E37-443B-8905-8AA93E2447FB\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.5-5ubuntu1.4\",\"matchCriteriaId\":\"DEFE769D-23DE-424A-805E-FB365889AA83\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"8D305F7A-D159-4716-AB26-5E38BB5CD991\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:canonical:ppp:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.4.5-5.1ubuntu2.3\\\\+esm2\",\"matchCriteriaId\":\"6CB91908-008C-478D-B667-5C1BC8B75C93\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"815D70A8-47D3-459C-A32C-9FEACA0659D1\"}]}]}],\"references\":[{\"url\":\"https://ubuntu.com/security/notices/USN-4451-1\",\"source\":\"security@ubuntu.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://ubuntu.com/security/notices/USN-4451-2\",\"source\":\"security@ubuntu.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://ubuntu.com/security/notices/USN-4451-1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://ubuntu.com/security/notices/USN-4451-2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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

Author Source Type Date Other

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.