GHSA-cg34-w3fm-82h3: Duplicate Advisory Scrapy Leaks The Authorization Header Vulnerability

HIGH
Share
CVSS 7.5
CWE-200
Published
Advisory Summary

GHSA-cg34-w3fm-82h3 is a HIGH (CVSS 7.5) scrapy leaks the authorization header vulnerability (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves scrapy leaks the authorization header on same-domain but cross-origin redirects. Remediation is available by upgrading affected packages to version 2.11.2.

GHSA-cg34-w3fm-82h3 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-cg34-w3fm-82h3
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).

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

How to Fix GHSA-cg34-w3fm-82h3

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

scrapy fixed: 2.11.2 
pip install scrapy>=2.11.2
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 scrapy

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-cg34-w3fm-82h3, inspect your installed packages using pip:

pip show scrapy

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.11.2), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor, where the product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. In Duplicate Advisory, 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

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-4qqq-9vqf-3h3f. This link is maintained to preserve external references. ## Original Description In scrapy/scrapy, an issue was identified where the Authorization header is not removed during redirects that only change the scheme (e.g., HTTPS to HTTP) but remain within the same domain. This behavior contravenes the Fetch standard, which mandates the removal of Authorization headers in cross-origin requests when the scheme, host, or port changes. Consequently, when a redirect downgrades from HTTPS to HTTP, the Authorization header may be inadvertently exposed in plaintext, leading to potential sensitive information disclosure to unauthorized actors. The flaw is located in the _build_redirect_request function of the redirect middleware.

GHSA-cg34-w3fm-82h3 Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
2.11.2
Product / Package Ecosystem Affected Versions Fixed Version
scrapy
pypi/scrapy
PyPI
< 2.11.2
2.11.2

References

NVD — GHSA-cg34-w3fm-82h3 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-1968
Security Fix Commit FIX COMMIT
https://github.com/scrapy/scrapy/commit/1d0502f25bbe55a22899af915623fda1aaeb9dd8
huntr.com/bounties/27f6a021-a... WEB
https://huntr.com/bounties/27f6a021-a891-446a-ada5-0226d619dd1a

Frequently Asked Questions

What is GHSA-cg34-w3fm-82h3?
GHSA-cg34-w3fm-82h3 is a security vulnerability in Duplicate Advisory involving Scrapy leaks the authorization header on same-domain but cross-origin redirects under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 2.11.2 across affected packages: scrapy.
What version fixes GHSA-cg34-w3fm-82h3?
Upgrading to 2.11.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is scrapy affected?
Yes, scrapy is affected in releases prior to 2.11.2. Upgrade your dependency to 2.11.2 or later.
What is the CVSS score of GHSA-cg34-w3fm-82h3?
GHSA-cg34-w3fm-82h3 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with GHSA-cg34-w3fm-82h3?
GHSA-cg34-w3fm-82h3 is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.).
How can I check PyPI dependencies for GHSA-cg34-w3fm-82h3?
Run the dependency tree command: 'pip show scrapy'. 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-cg34-w3fm-82h3",
  "modified" : "2024-05-20T20:17:03Z",
  "published" : "2024-05-20T09:30:50Z",
  "withdrawn" : "2024-05-20T20:17:03Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Scrapy leaks the authorization header on same-domain but cross-origin redirects ",
  "details" : "## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-4qqq-9vqf-3h3f. This link is maintained to preserve external references.\n\n## Original Description\nIn scrapy/scrapy, an issue was identified where the Authorization header is not removed during redirects that only change the scheme (e.g., HTTPS to HTTP) but remain within the same domain. This behavior contravenes the Fetch standard, which mandates the removal of Authorization headers in cross-origin requests when the scheme, host, or port changes. Consequently, when a redirect downgrades from HTTPS to HTTP, the Authorization header may be inadvertently exposed in plaintext, leading to potential sensitive information disclosure to unauthorized actors. The flaw is located in the _build_redirect_request function of the redirect middleware.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "scrapy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.11.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-1968"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/scrapy/scrapy/commit/1d0502f25bbe55a22899af915623fda1aaeb9dd8"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/27f6a021-a891-446a-ada5-0226d619dd1a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-05-20T20:17:03Z",
    "nvd_published_at" : "2024-05-20T08:15:08Z"
  }
}