CVE-2022-25887: Sanitize html Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-cgfm-xwp7-2cvr
Share
CVSS 7.5
CWE-1333
Published
Advisory Summary

CVE-2022-25887 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-1333: Inefficient Regular Expression Complexity) affecting Sanitize html libraries in the npm ecosystem. The issue involves sanitize-html vulnerable to redos attacks. Remediation is available by upgrading affected packages to version 2.7.1.

CVE-2022-25887 at a Glance

CVE Identifier CVE-2022-25887
GHSA Identifier GHSA-cgfm-xwp7-2cvr
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1333: Inefficient Regular Expression Complexity
Affected Product Sanitize html
Package Ecosystem npm
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-2022-25887

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

sanitize-html fixed: 2.7.1 
npm install sanitize-html@2.7.1
Verify Direct and Transitive Dependencies

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

npm ls sanitize-html

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-25887, inspect your project dependencies using npm:

npm ls sanitize-html

Analyze the terminal output to locate any version of Sanitize html in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.7.1), your application is affected.

Note: The npm ls sanitize-html command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

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 Sanitize html, 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

The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.

CVE-2022-25887 Affected Sanitize html Versions

1 component(s)
Fixed Versions:
2.7.1
Product / Package Ecosystem Affected Versions Fixed Version
sanitize-html
npm/sanitize-html
npm
< 2.7.1
2.7.1

References

NVD — CVE-2022-25887 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-25887
Sanitize html Source Repository REPOSITORY
https://github.com/apostrophecms/sanitize-html/pull/557
Security Fix Commit FIX COMMIT
https://github.com/apostrophecms/sanitize-html/commit/b4682c12fd30e12e82fa2d9b766de91d7d2cd23c
Sanitize html Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-3008102
Sanitize html Security Information SECURITY
https://security.snyk.io/vuln/SNYK-JS-SANITIZEHTML-2957526

Frequently Asked Questions

What is CVE-2022-25887?
CVE-2022-25887 is a security vulnerability in Sanitize html involving Sanitize-html Vulnerable To REDoS Attacks under CWE-1333: Inefficient Regular Expression Complexity.
Which Sanitize html versions are affected?
Affected versions include releases prior to 2.7.1 across affected packages: sanitize-html.
What version fixes CVE-2022-25887?
Upgrading to 2.7.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is sanitize-html affected?
Yes, sanitize-html is affected in releases prior to 2.7.1. Upgrade your dependency to 2.7.1 or later.
What is the CVSS score of CVE-2022-25887?
CVE-2022-25887 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-2022-25887?
CVE-2022-25887 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 npm dependencies for CVE-2022-25887?
Run the dependency tree command: 'npm ls sanitize-html'. 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-cgfm-xwp7-2cvr",
  "modified" : "2024-04-22T23:16:47Z",
  "published" : "2022-08-31T00:00:24Z",
  "aliases" : [ "CVE-2022-25887" ],
  "summary" : "Sanitize-html Vulnerable To REDoS Attacks",
  "details" : "The package sanitize-html before 2.7.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to insecure global regular expression replacement logic of HTML comment removal.",
  "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" : "npm",
      "name" : "sanitize-html"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.7.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-25887"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apostrophecms/sanitize-html/pull/557"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apostrophecms/sanitize-html/commit/b4682c12fd30e12e82fa2d9b766de91d7d2cd23c"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-3008102"
  }, {
    "type" : "WEB",
    "url" : "https://security.snyk.io/vuln/SNYK-JS-SANITIZEHTML-2957526"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1333" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-22T23:16:47Z",
    "nvd_published_at" : "2022-08-30T05:15:00Z"
  }
}