github - GHSA-8gg6-3r63-25m8

GHSA-8GG6-3R63-25M8

Vulnerability from github – Published: 2018-08-15 20:03 – Updated: 2023-08-29 12:09

Summary

git-fastclone permits arbitrary shell command execution from .gitmodules

Details

git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.

Severity ?

8.8 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "git-fastclone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2015-8968"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-77"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:25:37Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.",
  "id": "GHSA-8gg6-3r63-25m8",
  "modified": "2023-08-29T12:09:29Z",
  "published": "2018-08-15T20:03:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-8968"
    },
    {
      "type": "WEB",
      "url": "https://github.com/square/git-fastclone/pull/2"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/104465"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/git-fastclone/CVE-2015-8968.yml"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/square/git-fastclone"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20200227213019/http://www.securityfocus.com/bid/81433"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "git-fastclone permits arbitrary shell command execution from .gitmodules"
}

GSD-2015-8968

Vulnerability from gsd - Updated: 2015-12-11 00:00

Details

Git allows executing arbitrary shell commands using git-remote-ext via a remote URLs. Normally git never requests URLs that the user doesn't specifically request, so this is not a serious security concern. However, submodules did allow the remote repository to specify what URL to clone from. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.

Aliases

CVE-2015-8968

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2015-8968",
    "description": "git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.",
    "id": "GSD-2015-8968"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "git-fastclone",
            "purl": "pkg:gem/git-fastclone"
          }
        }
      ],
      "aliases": [
        "CVE-2015-8968",
        "GHSA-8gg6-3r63-25m8"
      ],
      "details": "Git allows executing arbitrary shell commands using git-remote-ext via a\nremote URLs. Normally git never requests URLs that the user doesn\u0027t\nspecifically request, so this is not a serious security concern. However,\nsubmodules did allow the remote repository to specify what URL to clone\nfrom.\n\nIf an attacker can instruct a user to run a recursive clone from a\nrepository they control, they can get a client to run an arbitrary shell\ncommand. Alternately, if an attacker can MITM an unencrypted git clone,\nthey could exploit this. The ext command will be run if the repository is\nrecursively cloned or if submodules are updated. This attack works when\ncloning both local and remote repositories.\n",
      "id": "GSD-2015-8968",
      "modified": "2015-12-11T00:00:00.000Z",
      "published": "2015-12-11T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://hackerone.com/reports/104465"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 8.8,
          "type": "CVSS_V3"
        }
      ],
      "summary": "git-fastclone permits arbitrary shell command execution from .gitmodules"
    }
  },
  "namespaces": {
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        "ASSIGNER": "support@hackerone.com",
        "ID": "CVE-2015-8968",
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          "vendor_data": [
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              "product": {
                "product_data": [
                  {
                    "product_name": "git-fastclone ruby gem All versions before 1.0.1",
                    "version": {
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                        {
                          "version_value": "git-fastclone ruby gem All versions before 1.0.1"
                        }
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            }
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      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Arbitrary Command Execution"
              }
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          }
        ]
      },
      "references": {
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            "name": "https://hackerone.com/reports/104465",
            "refsource": "MISC",
            "url": "https://hackerone.com/reports/104465"
          },
          {
            "name": "81433",
            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/81433"
          },
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            "name": "https://github.com/square/git-fastclone/pull/2",
            "refsource": "MISC",
            "url": "https://github.com/square/git-fastclone/pull/2"
          }
        ]
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2015-8968",
      "cvss_v3": 8.8,
      "date": "2015-12-11",
      "description": "Git allows executing arbitrary shell commands using git-remote-ext via a\nremote URLs. Normally git never requests URLs that the user doesn\u0027t\nspecifically request, so this is not a serious security concern. However,\nsubmodules did allow the remote repository to specify what URL to clone\nfrom.\n\nIf an attacker can instruct a user to run a recursive clone from a\nrepository they control, they can get a client to run an arbitrary shell\ncommand. Alternately, if an attacker can MITM an unencrypted git clone,\nthey could exploit this. The ext command will be run if the repository is\nrecursively cloned or if submodules are updated. This attack works when\ncloning both local and remote repositories.\n",
      "gem": "git-fastclone",
      "ghsa": "8gg6-3r63-25m8",
      "patched_versions": [
        "\u003e= 1.0.1"
      ],
      "title": "git-fastclone permits arbitrary shell command execution from .gitmodules",
      "url": "https://hackerone.com/reports/104465"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.0.1",
          "affected_versions": "All versions before 1.0.1",
          "credit": "Blake Burkhart",
          "cvss_v2": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "cvss_v3": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-77",
            "CWE-937"
          ],
          "date": "2016-11-28",
          "description": " Git allows executing arbitrary shell commands using `git-remote-ext` via remote\nURLs. Normally git never requests URLs that the user does not specifically request, so this is not a serious security concern. However, submodules did allow the remote repository to specify what URL to clone from. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories.",
          "fixed_versions": [
            "1.0.1"
          ],
          "identifier": "CVE-2015-8968",
          "identifiers": [
            "CVE-2015-8968"
          ],
          "not_impacted": "All versions starting from 1.0.1",
          "package_slug": "gem/git-fastclone",
          "pubdate": "2016-11-03",
          "solution": "Upgrade to version 1.0.1 or above.",
          "title": "Arbitrary shell command execution from .gitmodules",
          "urls": [
            "https://github.com/square/git-fastclone/pull/2",
            "https://hackerone.com/reports/104465"
          ],
          "uuid": "4fe98f18-52d8-4aeb-8412-180c715ab574"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:squareup:git-fastclone:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.0.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve-assignments@hackerone.com",
          "ID": "CVE-2015-8968"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
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              "lang": "en",
              "value": "git-fastclone before 1.0.1 permits arbitrary shell command execution from .gitmodules. If an attacker can instruct a user to run a recursive clone from a repository they control, they can get a client to run an arbitrary shell command. Alternately, if an attacker can MITM an unencrypted git clone, they could exploit this. The ext command will be run if the repository is recursively cloned or if submodules are updated. This attack works when cloning both local and remote repositories."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-77"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/square/git-fastclone/pull/2",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://github.com/square/git-fastclone/pull/2"
            },
            {
              "name": "https://hackerone.com/reports/104465",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://hackerone.com/reports/104465"
            },
            {
              "name": "81433",
              "refsource": "BID",
              "tags": [
                "Third Party Advisory",
                "VDB Entry"
              ],
              "url": "http://www.securityfocus.com/bid/81433"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 9.3,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": true
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2020-06-10T13:24Z",
      "publishedDate": "2016-11-03T10:59Z"
    }
  }
}

CVE-2015-8968 (GCVE-0-2015-8968)

Vulnerability from cvelistv5 – Published: 2016-11-03 10:00 – Updated: 2024-08-06 08:36

Summary

Severity ?

No CVSS data available.

CWE

Arbitrary Command Execution

Assigner

hackerone

References

URL

Tags

	https://hackerone.com/reports/104465	x_refsource_MISC
	http://www.securityfocus.com/bid/81433	vdb-entryx_refsource_BID
	https://github.com/square/git-fastclone/pull/2	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	git-fastclone ruby gem All versions before 1.0.1	Affected: git-fastclone ruby gem All versions before 1.0.1

Show details on NVD website

JSON

To clipboard

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          },
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            "name": "81433",
            "tags": [
              "vdb-entry",
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            "url": "http://www.securityfocus.com/bid/81433"
          },
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            ],
            "url": "https://github.com/square/git-fastclone/pull/2"
          }
        ],
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      }
    ],
    "cna": {
      "affected": [
        {
          "product": "git-fastclone ruby gem All versions before 1.0.1",
          "vendor": "n/a",
          "versions": [
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              "status": "affected",
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        }
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  "cveMetadata": {
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    "cveId": "CVE-2015-8968",
    "datePublished": "2016-11-03T10:00:00",
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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-8GG6-3R63-25M8

GSD-2015-8968

CVE-2015-8968 (GCVE-0-2015-8968)

Tags

Sightings

Nomenclature