Vulnerabilities in pkg:pypi/xhtml2pdf

PACKAGE
Advisory Identifier: GHSA-jj5c-hhrg-vv5h
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Advisory Summary

CVE-2024-25885 is a MODERATE (CVSS 5.3) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Xhtml2pdf libraries in the PyPI ecosystem. The issue involves xhtml2pdf denial of service via crafted string. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/xhtml2pdf

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/xhtml2pdf. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-jj5c-hhrg-vv5h CVE-2024-25885 MODERATE xhtml2pdf Denial of Service via crafted string

CVE-2024-25885 at a Glance

CVE Identifier CVE-2024-25885
GHSA Identifier GHSA-jj5c-hhrg-vv5h
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Xhtml2pdf
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix CVE-2024-25885

To remediate this vulnerability, upgrade all affected Xhtml2pdf dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

xhtml2pdf fixed: Latest secure release 
pip install xhtml2pdf>=Latest secure release
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 xhtml2pdf

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-25885, inspect your installed packages using pip:

pip show xhtml2pdf

Analyze the terminal output to locate any version of Xhtml2pdf in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show xhtml2pdf 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 Xhtml2pdf, 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

An issue in the getcolor function in utils.py of xhtml2pdf v0.2.13 allows attackers to cause a Regular expression Denial of Service (ReDOS) via supplying a crafted string.

CVE-2024-25885 Affected Xhtml2pdf Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
xhtml2pdf
pypi/xhtml2pdf
PyPI
≤ 0.2.16

References

NVD — CVE-2024-25885 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-25885
Xhtml2pdf Source Repository REPOSITORY
https://gist.github.com/salvatore-abello/c88dd0027496774023ef36c7b576d206
Xhtml2pdf Source Repository REPOSITORY
https://github.com/xhtml2pdf/xhtml2pdf

Frequently Asked Questions

What is CVE-2024-25885?
CVE-2024-25885 is a security vulnerability in Xhtml2pdf involving xhtml2pdf Denial of Service via crafted string under CWE-1333: Inefficient Regular Expression Complexity.
Which Xhtml2pdf versions are affected?
Affected versions include releases prior to current release patches across affected packages: xhtml2pdf.
What version fixes CVE-2024-25885?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is xhtml2pdf affected?
Yes, xhtml2pdf is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2024-25885?
CVE-2024-25885 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2024-25885?
CVE-2024-25885 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-2024-25885?
Run the dependency tree command: 'pip show xhtml2pdf'. 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-jj5c-hhrg-vv5h",
  "modified" : "2024-10-09T17:01:36Z",
  "published" : "2024-10-08T18:33:14Z",
  "aliases" : [ "CVE-2024-25885" ],
  "summary" : "xhtml2pdf Denial of Service via crafted string",
  "details" : "An issue in the getcolor function in utils.py of xhtml2pdf v0.2.13 allows attackers to cause a Regular expression Denial of Service (ReDOS) via supplying a crafted string.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "xhtml2pdf"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.2.16"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-25885"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/salvatore-abello/c88dd0027496774023ef36c7b576d206"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xhtml2pdf/xhtml2pdf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-09T17:01:36Z",
    "nvd_published_at" : "2024-10-08T18:15:05Z"
  }
}