GHSA-7c9g-vj9m-8pm6: Duplicate Advisory Denial of Service Vulnerability

HIGH
Share
CVSS 7.5
CWE-1333
Published
Advisory Summary

GHSA-7c9g-vj9m-8pm6 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves redos vulnerability of xmlfeedspider. Remediation is available by upgrading affected packages to version 2.11.1, 1.8.4.

GHSA-7c9g-vj9m-8pm6 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-7c9g-vj9m-8pm6
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
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:N/I:N/A:H).

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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix GHSA-7c9g-vj9m-8pm6

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: 2.11.1 
pip install scrapy>=2.11.1
scrapy fixed: 1.8.4 
pip install scrapy>=1.8.4
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-7c9g-vj9m-8pm6, 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 2.11.1), 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-1333: Inefficient Regular Expression Complexity, where the product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential. 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-cc65-xxvf-f7r9. This link is maintained to preserve external references. ## Original Description Parts of the Scrapy API were found to be vulnerable to a ReDoS attack. Handling a malicious response could cause extreme CPU and memory usage during the parsing of its content, due to the use of vulnerable regular expressions for that parsing.

GHSA-7c9g-vj9m-8pm6 Affected Duplicate Advisory Versions

2 component(s)
Fixed Versions:
2.11.11.8.4
Product / Package Ecosystem Affected Versions Fixed Version
scrapy
pypi/scrapy
PyPI
≥ 2
< 2.11.1
2.11.1
scrapy
pypi/scrapy
PyPI
< 1.8.4
1.8.4

References

NVD — GHSA-7c9g-vj9m-8pm6 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-1892
Security Fix Commit FIX COMMIT
https://github.com/scrapy/scrapy/commit/479619b340f197a8f24c5db45bc068fb8755f2c5
huntr.com/bounties/271f94f2-1... WEB
https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b

Frequently Asked Questions

What is GHSA-7c9g-vj9m-8pm6?
GHSA-7c9g-vj9m-8pm6 is a security vulnerability in Duplicate Advisory involving ReDos vulnerability of XMLFeedSpider under CWE-1333: Inefficient Regular Expression Complexity.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 2.11.1, 1.8.4 across affected packages: scrapy.
What version fixes GHSA-7c9g-vj9m-8pm6?
Upgrading to 2.11.1, 1.8.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is scrapy affected?
Yes, scrapy is affected in releases prior to 2.11.1, 1.8.4. Upgrade your dependency to 2.11.1, 1.8.4 or later.
What is the CVSS score of GHSA-7c9g-vj9m-8pm6?
GHSA-7c9g-vj9m-8pm6 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:N/I:N/A:H.
What CWE is associated with GHSA-7c9g-vj9m-8pm6?
GHSA-7c9g-vj9m-8pm6 is classified under CWE-1333: Inefficient Regular Expression Complexity (The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.).
How can I check PyPI dependencies for GHSA-7c9g-vj9m-8pm6?
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-7c9g-vj9m-8pm6",
  "modified" : "2024-04-16T16:10:38Z",
  "published" : "2024-02-28T00:31:55Z",
  "withdrawn" : "2024-04-16T16:10:38Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: ReDos vulnerability of XMLFeedSpider",
  "details" : "## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-cc65-xxvf-f7r9. This link is maintained to preserve external references.\n\n## Original Description\nParts of the Scrapy API were found to be vulnerable to a ReDoS attack. Handling a malicious response could cause extreme CPU and memory usage during the parsing of its content, due to the use of vulnerable regular expressions for that parsing.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "scrapy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2"
      }, {
        "fixed" : "2.11.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "scrapy"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.8.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-1892"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/scrapy/scrapy/commit/479619b340f197a8f24c5db45bc068fb8755f2c5"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/271f94f2-1e05-4616-ac43-41752389e26b"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-16T16:10:38Z",
    "nvd_published_at" : "2024-02-28T00:15:53Z"
  }
}