pysec - pysec-2024-188

pysec-2024-188

Vulnerability from pysec

Published

2024-08-14 21:15

Modified

2025-01-19 04:23

Severity ?

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. urlparse however treats a // at the start of a string as a URI without a scheme, and then treats the next part as the hostname. urljoin will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "webob",
        "purl": "pkg:pypi/webob"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f689bcf4f0a1f64f1735b1d5069aef5be6974b5b"
            }
          ],
          "repo": "https://github.com/pylons/webob",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8",
        "0.8.1",
        "0.8.2",
        "0.8.3",
        "0.8.4",
        "0.8.5",
        "0.9",
        "0.9.1",
        "0.9.2",
        "0.9.3",
        "0.9.4",
        "0.9.5",
        "0.9.6",
        "0.9.6.1",
        "0.9.7",
        "0.9.7.1",
        "0.9.8",
        "1.0",
        "1.0.1",
        "1.0.2",
        "1.0.3",
        "1.0.4",
        "1.0.5",
        "1.0.6",
        "1.0.7",
        "1.0.8",
        "1.1",
        "1.1.1",
        "1.1b2",
        "1.1beta1",
        "1.1rc1",
        "1.2",
        "1.2.1",
        "1.2.2",
        "1.2.3",
        "1.2b1",
        "1.2b2",
        "1.2b3",
        "1.2rc1",
        "1.3",
        "1.3.1",
        "1.4",
        "1.4.1",
        "1.4.2",
        "1.5.0",
        "1.5.0a0",
        "1.5.0a1",
        "1.5.0b0",
        "1.5.1",
        "1.6.0",
        "1.6.0a0",
        "1.6.1",
        "1.6.2",
        "1.6.3",
        "1.6.4",
        "1.7.0",
        "1.7.0rc1",
        "1.7.0rc2",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.7.4",
        "1.8.0",
        "1.8.0rc1",
        "1.8.1",
        "1.8.2",
        "1.8.3",
        "1.8.4",
        "1.8.5",
        "1.8.6",
        "1.8.7"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-42353",
    "GHSA-mg3v-6m49-jhp3"
  ],
  "details": "WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python\u0027s urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.",
  "id": "PYSEC-2024-188",
  "modified": "2025-01-19T04:23:01.908824+00:00",
  "published": "2024-08-14T21:15:17+00:00",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3"
    },
    {
      "type": "EVIDENCE",
      "url": "https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

ghsa-mg3v-6m49-jhp3

Vulnerability from github

Published

2024-08-14 17:48

Modified

2025-01-21 18:00

Severity ?

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Summary

WebOb's location header normalization during redirect leads to open redirect

Details

Impact

When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. urlparse however treats a // at the start of a string as a URI without a scheme, and then treats the next part as the hostname. urljoin will then use that hostname from the second part as the hostname replacing the original one from the request.

```

parse.urlparse("//example.com/test/path") ParseResult(scheme='', netloc='example.com', path='/test/path', params='', query='', fragment='') ```

WebOb uses urljoin to take the request URI and joining the redirect location, so assuming the request URI is: https://example.org//example.com/some/path, and the URL to redirect to (for example by adding a slash automatically) is //example.com/some/path/ that gets turned by urljoin into:

```

parse.urljoin("https://example.org//attacker.com/some/path", "//attacker.com/some/path/") 'https://attacker.com/some/path/' ```

Which redirects from example.org where we want the user to stay to attacker.com

Patches

This issue is patched in WebOb 1.8.8

Older versions of WebOb continue to be vulnerable to this issue, and should be avoided.

Workarounds

Any use of the Response class that includes a location can be rewritten to make sure to always pass a full URI that includes the hostname to redirect the user to.

Thanks

Sara Gao

This issue was reported via the Pylons Project Security List

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.8.7"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "webob"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2024-42353"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-601"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-08-14T17:48:06Z",
    "nvd_published_at": "2024-08-14T21:15:17Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\n\nWhen WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python\u0027s urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request.\n\n```\n\u003e\u003e\u003e parse.urlparse(\"//example.com/test/path\")\nParseResult(scheme=\u0027\u0027, netloc=\u0027example.com\u0027, path=\u0027/test/path\u0027, params=\u0027\u0027, query=\u0027\u0027, fragment=\u0027\u0027)\n```\n\nWebOb uses `urljoin` to take the request URI and joining the redirect location, so assuming the request URI is: `https://example.org//example.com/some/path`, and the URL to redirect to (for example by adding a slash automatically) is `//example.com/some/path/` that gets turned by `urljoin` into:\n\n```\n\u003e\u003e\u003e parse.urljoin(\"https://example.org//attacker.com/some/path\", \"//attacker.com/some/path/\")\n\u0027https://attacker.com/some/path/\u0027\n```\n\nWhich redirects from `example.org` where we want the user to stay to `attacker.com`\n\n\n### Patches\n\nThis issue is patched in WebOb 1.8.8\n\nOlder versions of WebOb continue to be vulnerable to this issue, and should be avoided.\n\n### Workarounds\n\nAny use of the `Response` class that includes a `location` can be rewritten to make sure to always pass a full URI that includes the hostname to redirect the user to.\n\n### Thanks\n\n- Sara Gao\n\nThis issue was reported via the [Pylons Project Security List](mailto:pylons-project-security@googlegroups.com)\n",
  "id": "GHSA-mg3v-6m49-jhp3",
  "modified": "2025-01-21T18:00:40Z",
  "published": "2024-08-14T17:48:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42353"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Pylons/webob"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/webob/PYSEC-2024-188.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "WebOb\u0027s location header normalization during redirect leads to open redirect"
}

cve-2024-42353

Vulnerability from cvelistv5

Published

2024-08-14 20:12

Modified

2024-08-15 14:04

Severity ?

6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Summary

WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.

References

▼	URL	Tags
	https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3	x_refsource_CONFIRM
	https://github.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Pylons	webob	Version: <= 1.8.7

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-42353",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-15T14:02:15.377428Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-15T14:04:01.806Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "webob",
          "vendor": "Pylons",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.8.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python\u0027s urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-601",
              "description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-08-14T20:12:30.077Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/Pylons/webob/security/advisories/GHSA-mg3v-6m49-jhp3"
        },
        {
          "name": "https://github.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b"
        }
      ],
      "source": {
        "advisory": "GHSA-mg3v-6m49-jhp3",
        "discovery": "UNKNOWN"
      },
      "title": "WebOb\u0027s location header normalization during redirect leads to open redirect"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2024-42353",
    "datePublished": "2024-08-14T20:12:30.077Z",
    "dateReserved": "2024-07-30T14:01:33.922Z",
    "dateUpdated": "2024-08-15T14:04:01.806Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

pysec-2024-188

Vulnerability from pysec

ghsa-mg3v-6m49-jhp3

Vulnerability from github

Impact

Patches

Workarounds

Thanks

cve-2024-42353

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature