CVE-2024-24808: Pyload ng PyLoad Open Redirect Vulnerability Due Vulnerability

MODERATE
Advisory Identifier: GHSA-g3cm-qg2v-2hj5
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2024-24808 is a MODERATE (CVSS 6.1) pyload open redirect vulnerability due vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Pyload ng libraries in the PyPI ecosystem. The issue involves pyload open redirect vulnerability due to improper validation of the is_safe_url function. Remediation is available by upgrading affected packages to version 0.5.0b3.dev79.

CVE-2024-24808 at a Glance

CVE Identifier CVE-2024-24808
GHSA Identifier GHSA-g3cm-qg2v-2hj5
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Pyload ng
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2024-24808

To remediate this vulnerability, upgrade all affected Pyload ng dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pyload-ng fixed: 0.5.0b3.dev79 
pip install pyload-ng>=0.5.0b3.dev79
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show pyload-ng

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-24808, inspect your installed packages using pip:

pip show pyload-ng

Analyze the terminal output to locate any version of Pyload ng in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.0b3.dev79), your application is affected.

Note: The pip show pyload-ng command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. In Pyload ng, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary Open redirect vulnerability due to incorrect validation of input values when redirecting users after login. ### Details pyload is validating URLs via the `get_redirect_url` function when redirecting users at login. ![301715649-f533db41-d0bd-44f7-8735-be1887fbd06c](https://github.com/pyload/pyload/assets/114328108/7fbec2ed-05ed-46e6-847f-05132cf3f136) The URL entered in the `next` variable goes through the `is_safe_url` function, where a lack of validation can redirect the user to an arbitrary domain. ![301715667-2819b1d3-8a14-42f4-89c8-3d2fa84fc309](https://github.com/pyload/pyload/assets/114328108/613484f3-8097-4871-887d-8fa5eec817cc) The documentation in the urllib library shows that improper URLs are recognized as relative paths when using the `urlparse` function. (https://docs.python.org/3/library/urllib.parse.html#urllib.parse.urlparse) For example, When an unusual URL like `https:///example.com` is entered, `urlparse` interprets it as a relative path, but in the actual request it is converted to `https://example.com` due to url normalization. ### PoC 1. In the next variable, insert the URL to which you want to redirect the user. ![301715949-bb1451eb-5e84-451d-83b4-5c3e204d1df7](https://github.com/pyload/pyload/assets/114328108/6fe639ea-1f85-4715-bf6c-c9c8c4ee9c94) 2. Check that it is possible to bypass url validation and redirect users to an arbitrary url. ![301715824-3de6584a-878d-4ec4-a3d5-a34d11c6c0ac](https://github.com/pyload/pyload/assets/114328108/902b3244-a4ef-4f8e-8319-c4b92764f15f) ![301716107-ba5ab7b9-7aa8-4b7a-8924-eba82442b4c3](https://github.com/pyload/pyload/assets/114328108/35191d7b-50b9-4a46-8319-ebdebec20b41) ### Impact An attacker can use this vulnerability to redirect users to malicious websites, which can be used for phishing and similar attacks.

CVE-2024-24808 Affected Pyload ng Versions

1 component(s)
Fixed Versions:
0.5.0b3.dev79
Product / Package Ecosystem Affected Versions Fixed Version
pyload-ng
pypi/pyload-ng
PyPI
< 0.5.0b3.dev79
0.5.0b3.dev79

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pyload/pyload/security/advisories/GHSA-g3cm-qg2v-2hj5
NVD — CVE-2024-24808 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-24808
Security Fix Commit FIX COMMIT
https://github.com/pyload/pyload/commit/fe94451dcc2be90b3889e2fd9d07b483c8a6dccd
Pyload ng Source Repository REPOSITORY
https://github.com/pyload/pyload

Frequently Asked Questions

What is CVE-2024-24808?
CVE-2024-24808 is a security vulnerability in Pyload ng involving pyLoad open redirect vulnerability due to improper validation of the is_safe_url function under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
Which Pyload ng versions are affected?
Affected versions include releases prior to 0.5.0b3.dev79 across affected packages: pyload-ng.
What version fixes CVE-2024-24808?
Upgrading to 0.5.0b3.dev79 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pyload-ng affected?
Yes, pyload-ng is affected in releases prior to 0.5.0b3.dev79. Upgrade your dependency to 0.5.0b3.dev79 or later.
What is the CVSS score of CVE-2024-24808?
CVE-2024-24808 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2024-24808?
CVE-2024-24808 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check PyPI dependencies for CVE-2024-24808?
Run the dependency tree command: 'pip show pyload-ng'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g3cm-qg2v-2hj5",
  "modified" : "2024-02-14T14:51:14Z",
  "published" : "2024-02-05T23:23:22Z",
  "aliases" : [ "CVE-2024-24808" ],
  "summary" : "pyLoad open redirect vulnerability due to improper validation of the is_safe_url function",
  "details" : "### Summary\nOpen redirect vulnerability due to incorrect validation of input values when redirecting users after login.\n\n### Details\npyload is validating URLs via the `get_redirect_url` function when redirecting users at login.\n![301715649-f533db41-d0bd-44f7-8735-be1887fbd06c](https://github.com/pyload/pyload/assets/114328108/7fbec2ed-05ed-46e6-847f-05132cf3f136)\n\n\nThe URL entered in the `next` variable goes through the `is_safe_url` function, where a lack of validation can redirect the user to an arbitrary domain.\n![301715667-2819b1d3-8a14-42f4-89c8-3d2fa84fc309](https://github.com/pyload/pyload/assets/114328108/613484f3-8097-4871-887d-8fa5eec817cc)\n\n\nThe documentation in the urllib library shows that improper URLs are recognized as relative paths when using the `urlparse` function. (https://docs.python.org/3/library/urllib.parse.html#urllib.parse.urlparse)\n\nFor example, When an unusual URL like `https:///example.com` is entered, `urlparse` interprets it as a relative path, but in the actual request it is converted to `https://example.com` due to url normalization.\n\n### PoC\n1. In the next variable, insert the URL to which you want to redirect the user.\n![301715949-bb1451eb-5e84-451d-83b4-5c3e204d1df7](https://github.com/pyload/pyload/assets/114328108/6fe639ea-1f85-4715-bf6c-c9c8c4ee9c94)\n\n\n\n2. Check that it is possible to bypass url validation and redirect users to an arbitrary url.\n![301715824-3de6584a-878d-4ec4-a3d5-a34d11c6c0ac](https://github.com/pyload/pyload/assets/114328108/902b3244-a4ef-4f8e-8319-c4b92764f15f)\n![301716107-ba5ab7b9-7aa8-4b7a-8924-eba82442b4c3](https://github.com/pyload/pyload/assets/114328108/35191d7b-50b9-4a46-8319-ebdebec20b41)\n\n\n\n### Impact\nAn attacker can use this vulnerability to redirect users to malicious websites, which can be used for phishing and similar attacks.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "pyload-ng"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.0b3.dev79"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pyload/pyload/security/advisories/GHSA-g3cm-qg2v-2hj5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-24808"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pyload/pyload/commit/fe94451dcc2be90b3889e2fd9d07b483c8a6dccd"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pyload/pyload"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-02-05T23:23:22Z",
    "nvd_published_at" : "2024-02-06T04:15:08Z"
  }
}