Vulnerability-Lookup

PYSEC-2022-44

Vulnerability from pysec - Published: 2022-01-18 22:15 - Updated: 2022-03-09 00:16

Details

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions an adversary with a primitive that allows for filesystem access from the context of the Onionshare process can access sensitive files in the entire user home folder. This could lead to the leaking of sensitive data. Due to the automatic exclusion of hidden folders, the impact is reduced. This can be mitigated by usage of the flatpak release.

Impacted products

Name	purl
onionshare-cli	pkg:pypi/onionshare-cli

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "onionshare-cli",
        "purl": "pkg:pypi/onionshare-cli"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3",
        "2.3.1",
        "2.3.2",
        "2.3.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21693",
    "GHSA-jgm9-xpfj-4fq6"
  ],
  "details": "OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions an adversary with a primitive that allows for filesystem access from the context of the Onionshare process can access sensitive files in the entire user home folder. This could lead to the leaking of sensitive data. Due to the automatic exclusion of hidden folders, the impact is reduced. This can be mitigated by usage of the flatpak release.",
  "id": "PYSEC-2022-44",
  "modified": "2022-03-09T00:16:43.325615Z",
  "published": "2022-01-18T22:15:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/onionshare/onionshare/releases/tag/v2.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-jgm9-xpfj-4fq6"
    }
  ]
}

CVE-2022-21693 (GCVE-0-2022-21693)

Vulnerability from cvelistv5 – Published: 2022-01-18 22:03 – Updated: 2025-04-23 19:10

Title

Path traversal in Onionshare

Summary

Severity ?

6.3 (Medium)


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

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/onionshare/onionshare/releases…	x_refsource_MISC
	https://github.com/onionshare/onionshare/security…	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	onionshare	onionshare	Affected: < 2.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T02:53:34.708Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/onionshare/onionshare/releases/tag/v2.5"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-jgm9-xpfj-4fq6"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2022-21693",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-23T14:11:54.774156Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-23T19:10:35.007Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "onionshare",
          "vendor": "onionshare",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions an adversary with a primitive that allows for filesystem access from the context of the Onionshare process can access sensitive files in the entire user home folder. This could lead to the leaking of sensitive data. Due to the automatic exclusion of hidden folders, the impact is reduced. This can be mitigated by usage of the flatpak release."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-01-18T22:03:54.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/onionshare/onionshare/releases/tag/v2.5"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-jgm9-xpfj-4fq6"
        }
      ],
      "source": {
        "advisory": "GHSA-jgm9-xpfj-4fq6",
        "discovery": "UNKNOWN"
      },
      "title": "Path traversal in Onionshare",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2022-21693",
          "STATE": "PUBLIC",
          "TITLE": "Path traversal in Onionshare"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "onionshare",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c 2.5"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "onionshare"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions an adversary with a primitive that allows for filesystem access from the context of the Onionshare process can access sensitive files in the entire user home folder. This could lead to the leaking of sensitive data. Due to the automatic exclusion of hidden folders, the impact is reduced. This can be mitigated by usage of the flatpak release."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/onionshare/onionshare/releases/tag/v2.5",
              "refsource": "MISC",
              "url": "https://github.com/onionshare/onionshare/releases/tag/v2.5"
            },
            {
              "name": "https://github.com/onionshare/onionshare/security/advisories/GHSA-jgm9-xpfj-4fq6",
              "refsource": "CONFIRM",
              "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-jgm9-xpfj-4fq6"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-jgm9-xpfj-4fq6",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2022-21693",
    "datePublished": "2022-01-18T22:03:54.000Z",
    "dateReserved": "2021-11-16T00:00:00.000Z",
    "dateUpdated": "2025-04-23T19:10:35.007Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-JGM9-XPFJ-4FQ6

Vulnerability from github – Published: 2022-01-21 23:20 – Updated: 2024-10-07 21:02

Summary

Path traversal in Onionshare

Details

Between September 26, 2021 and October 8, 2021, Radically Open Security conducted a penetration test of OnionShare 2.4, funded by the Open Technology Fund's Red Team lab. This is an issue from that penetration test.

Vulnerability ID: OTF-013
Vulnerability type: Improper Hardening
Threat level: Low

Description:

The filesystem restriction could be hardened and should only allow for pre-defined subfolders.

Technical description:

The Flatpak and Snap configurations allow for read-only access on the whole home folder. The relevant lines in the configuration files are onionshare/snap/snapcraft.yaml#L20 and onionshare/flatpak/org.onionshare.OnionShare.yaml#L19 , respectively.

The encapsulation of filesystem access via these mechanisms should be restricted to pre-defined folders and not allow for access to (configuration) files outside the Onionshare-specific folders.

Sadly Snap does not allow for further restriction to specific folders and therefore cannot be further hardened. By default both frameworks disallow access to hidden folders and therefore reduce the potential impact.

Impact:

An adversary with a primitive that allows for filesystem access from the context of the Onionshare process can access sensitive files in the entire user home folder. This could lead to the leaking of sensitive data. Due to the automatic exclusion of hidden folders, the impact is reduced.

Recommendation:

Reduce read access in Flatpak configuration.

Severity ?

6.3 (Medium)


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

4.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "onionshare-cli"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.3"
            },
            {
              "fixed": "2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2022-21693"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2022-01-19T19:28:05Z",
    "nvd_published_at": "2022-01-18T22:15:00Z",
    "severity": "MODERATE"
  },
  "details": "Between September 26, 2021 and October 8, 2021, [Radically Open Security](https://www.radicallyopensecurity.com/) conducted a penetration test of OnionShare 2.4, funded by the Open Technology Fund\u0027s [Red Team lab](https://www.opentech.fund/labs/red-team-lab/). This is an issue from that penetration test.\n\n- Vulnerability ID: OTF-013\n- Vulnerability type: Improper Hardening\n- Threat level: Low\n\n## Description:\n\nThe filesystem restriction could be hardened and should only allow for pre-defined subfolders.\n\n## Technical description:\n\nThe Flatpak and Snap configurations allow for read-only access on the whole home folder. The relevant lines in the configuration files are `onionshare/snap/snapcraft.yaml#L20` and `onionshare/flatpak/org.onionshare.OnionShare.yaml#L19` , respectively.\n\nThe encapsulation of filesystem access via these mechanisms should be restricted to pre-defined folders and not allow for access to (configuration) files outside the Onionshare-specific folders.\n\nSadly Snap does not allow for further restriction to specific folders and therefore cannot be further hardened. By default both frameworks disallow access to hidden folders and therefore reduce the potential impact.\n\n## Impact:\n\nAn adversary with a primitive that allows for filesystem access from the context of the Onionshare process can access sensitive files in the entire user home folder. This could lead to the leaking of sensitive data. Due to the automatic exclusion of hidden folders, the impact is reduced.\n\n## Recommendation:\n\n- Reduce read access in Flatpak configuration.",
  "id": "GHSA-jgm9-xpfj-4fq6",
  "modified": "2024-10-07T21:02:51Z",
  "published": "2022-01-21T23:20:19Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/onionshare/onionshare/security/advisories/GHSA-jgm9-xpfj-4fq6"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-21693"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/onionshare/onionshare"
    },
    {
      "type": "WEB",
      "url": "https://github.com/onionshare/onionshare/releases/tag/v2.5"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/onionshare-cli/PYSEC-2022-44.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Path traversal in Onionshare"
}

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

PYSEC-2022-44

CVE-2022-21693 (GCVE-0-2022-21693)

GHSA-JGM9-XPFJ-4FQ6

Description:

Technical description:

Impact:

Recommendation:

Tags

Sightings

Nomenclature