CVE-2023-4241: Lol html Lol-html Panics On Certain HTML Vulnerability

HIGH
Advisory Identifier: GHSA-c3x7-354f-4p2x
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CVSS 7.5
CWE-20
Published
Advisory Summary

CVE-2023-4241 is a HIGH (CVSS 7.5) lol-html panics on certain html vulnerability (CWE-20: Improper Input Validation) affecting Lol html libraries in the crates.io ecosystem. The issue involves lol-html panics on certain html inputs. Remediation is available by upgrading affected packages to version 1.1.1.

CVE-2023-4241 at a Glance

CVE Identifier CVE-2023-4241
GHSA Identifier GHSA-c3x7-354f-4p2x
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-20: Improper Input Validation
Affected Product Lol html
Package Ecosystem crates.io
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-2023-4241

To remediate this vulnerability, upgrade all affected Lol 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.

lol-html fixed: 1.1.1 
Upgrade lol-html to 1.1.1
Verify Direct and Transitive Dependencies

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

inspect dependencies for lol-html

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-4241, inspect your project dependencies for Lol html:

inspect dependencies for lol-html

Analyze the terminal output to locate any version of Lol html in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.1.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Lol 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

### Impact lol-html can cause panics on certain HTML inputs. Anyone processing arbitrary 3rd party HTML with the library is affected. ### Patches The problem has been patched and released as v1.1.1 ### Workarounds No workarounds exist.

CVE-2023-4241 Affected Lol html Versions

1 component(s)
Fixed Versions:
1.1.1
Product / Package Ecosystem Affected Versions Fixed Version
lol-html
 crates.io
< 1.1.1
1.1.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/cloudflare/lol-html/security/advisories/GHSA-c3x7-354f-4p2x
NVD — CVE-2023-4241 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-4241
Lol html Source Repository REPOSITORY
https://github.com/cloudflare/lol-html

Frequently Asked Questions

What is CVE-2023-4241?
CVE-2023-4241 is a security vulnerability in Lol html involving lol-html panics on certain HTML inputs under CWE-20: Improper Input Validation.
Which Lol html versions are affected?
Affected versions include releases prior to 1.1.1 across affected packages: lol-html.
What version fixes CVE-2023-4241?
Upgrading to 1.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is lol-html affected?
Yes, lol-html is affected in releases prior to 1.1.1. Upgrade your dependency to 1.1.1 or later.
What is the CVSS score of CVE-2023-4241?
CVE-2023-4241 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-2023-4241?
CVE-2023-4241 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check crates.io dependencies for CVE-2023-4241?
Run the dependency tree command: 'inspect dependencies for lol-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-c3x7-354f-4p2x",
  "modified" : "2023-08-09T13:17:53Z",
  "published" : "2023-08-09T13:17:53Z",
  "aliases" : [ "CVE-2023-4241" ],
  "summary" : "lol-html panics on certain HTML inputs",
  "details" : "### Impact\nlol-html can cause panics on certain HTML inputs. Anyone processing arbitrary 3rd party HTML with the library is affected.\n\n### Patches\nThe problem has been patched and released as v1.1.1\n\n### Workarounds\nNo workarounds exist.\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" : "crates.io",
      "name" : "lol-html"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/cloudflare/lol-html/security/advisories/GHSA-c3x7-354f-4p2x"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-4241"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cloudflare/lol-html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-09T13:17:53Z",
    "nvd_published_at" : "2023-08-16T11:15:11Z"
  }
}