CVE-2024-28865: Wiki Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-wj85-w4f4-xh8h
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CVSS 7.5
CWE-1333
Published
Advisory Summary

CVE-2024-28865 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Wiki libraries in the PyPI ecosystem. The issue involves denial of service via regular expression. Remediation is available by upgrading affected packages to version 0.10.1.

CVE-2024-28865 at a Glance

CVE Identifier CVE-2024-28865
GHSA Identifier GHSA-wj85-w4f4-xh8h
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Wiki
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:3.1/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 CVE-2024-28865

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

wiki fixed: 0.10.1 
pip install wiki>=0.10.1
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 wiki

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-28865, inspect your installed packages using pip:

pip show wiki

Analyze the terminal output to locate any version of Wiki in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.10.1), your application is affected.

Note: The pip show wiki 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 Wiki, 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

### Impact All historical installations of django-wiki are vulnerable to maliciously crafted article content, that can cause severe use of server CPU through a regular expression loop. ### Patches ### Workarounds Close off access to create and edit articles by anonymous users. ### References _Are there any links users can visit to find out more?_

CVE-2024-28865 Affected Wiki Versions

1 component(s)
Fixed Versions:
0.10.1
Product / Package Ecosystem Affected Versions Fixed Version
wiki
pypi/wiki
PyPI
< 0.10.1
0.10.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/django-wiki/django-wiki/security/advisories/GHSA-wj85-w4f4-xh8h
NVD — CVE-2024-28865 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-28865
Security Fix Commit FIX COMMIT
https://github.com/django-wiki/django-wiki/commit/8e280fd6c0bd27ce847c67b2d216c6cbf920f88c
Wiki Source Repository REPOSITORY
https://github.com/django-wiki/django-wiki

Frequently Asked Questions

What is CVE-2024-28865?
CVE-2024-28865 is a security vulnerability in Wiki involving Denial of service via regular expression under CWE-1333: Inefficient Regular Expression Complexity.
Which Wiki versions are affected?
Affected versions include releases prior to 0.10.1 across affected packages: wiki.
What version fixes CVE-2024-28865?
Upgrading to 0.10.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is wiki affected?
Yes, wiki is affected in releases prior to 0.10.1. Upgrade your dependency to 0.10.1 or later.
What is the CVSS score of CVE-2024-28865?
CVE-2024-28865 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2024-28865?
CVE-2024-28865 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 CVE-2024-28865?
Run the dependency tree command: 'pip show wiki'. 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-wj85-w4f4-xh8h",
  "modified" : "2024-03-19T18:30:57Z",
  "published" : "2024-03-18T20:37:48Z",
  "aliases" : [ "CVE-2024-28865" ],
  "summary" : "Denial of service via regular expression",
  "details" : "### Impact\n\nAll historical installations of django-wiki are vulnerable to maliciously crafted article content, that can cause severe use of server CPU through a regular expression loop.\n\n### Patches\n\n\n\n### Workarounds\n\nClose off access to create and edit articles by anonymous users.\n\n### References\n_Are there any links users can visit to find out more?_\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "wiki"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.10.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/django-wiki/django-wiki/security/advisories/GHSA-wj85-w4f4-xh8h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-28865"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django-wiki/django-wiki/commit/8e280fd6c0bd27ce847c67b2d216c6cbf920f88c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/django-wiki/django-wiki"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-03-18T20:37:48Z",
    "nvd_published_at" : "2024-03-18T22:15:09Z"
  }
}