CVE-2020-15514: Haffner/jh captcha Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-23fm-v895-3qxq
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2020-15514 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Haffner/jh captcha libraries in the Packagist ecosystem. The issue involves jh_captcha for typo3 xss vulnerability. Remediation is available by upgrading affected packages to version 3.0.3, 2.1.4.

CVE-2020-15514 at a Glance

CVE Identifier CVE-2020-15514
GHSA Identifier GHSA-23fm-v895-3qxq
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Haffner/jh captcha
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2020-15514

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

haffner/jh_captcha fixed: 3.0.3 
Upgrade haffner/jh_captcha to 3.0.3
haffner/jh_captcha fixed: 2.1.4 
Upgrade haffner/jh_captcha to 2.1.4
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 haffner/jh_captcha

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-15514, inspect your project dependencies for Haffner/jh captcha:

inspect dependencies for haffner/jh_captcha

Analyze the terminal output to locate any version of Haffner/jh captcha in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.3), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Haffner/jh captcha, 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 jh_captcha extension through 2.1.3, and 3.x through 3.0.2, for TYPO3 allows XSS.

CVE-2020-15514 Affected Haffner/jh captcha Versions

2 component(s)
Fixed Versions:
3.0.32.1.4
Product / Package Ecosystem Affected Versions Fixed Version
haffner/jh_captcha
 Packagist
≥ 3.0.0
< 3.0.3
3.0.3
haffner/jh_captcha
 Packagist
< 2.1.4
2.1.4

References

NVD — CVE-2020-15514 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15514
Haffner/jh captcha Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2020-012

Frequently Asked Questions

What is CVE-2020-15514?
CVE-2020-15514 is a security vulnerability in Haffner/jh captcha involving jh_captcha for Typo3 XSS Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Haffner/jh captcha versions are affected?
Affected versions include releases prior to 3.0.3, 2.1.4 across affected packages: haffner/jh_captcha.
What version fixes CVE-2020-15514?
Upgrading to 3.0.3, 2.1.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is haffner/jh_captcha affected?
Yes, haffner/jh_captcha is affected in releases prior to 3.0.3, 2.1.4. Upgrade your dependency to 3.0.3, 2.1.4 or later.
What is the CVSS score of CVE-2020-15514?
CVE-2020-15514 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2020-15514?
CVE-2020-15514 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2020-15514?
Run the dependency tree command: 'inspect dependencies for haffner/jh_captcha'. 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-23fm-v895-3qxq",
  "modified" : "2023-07-13T19:03:27Z",
  "published" : "2022-05-24T17:22:31Z",
  "aliases" : [ "CVE-2020-15514" ],
  "summary" : "jh_captcha for Typo3 XSS Vulnerability",
  "details" : "The jh_captcha extension through 2.1.3, and 3.x through 3.0.2, for TYPO3 allows XSS.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "haffner/jh_captcha"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.0.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.0.2"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "haffner/jh_captcha"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.1.3"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-15514"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2020-012"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-13T19:03:27Z",
    "nvd_published_at" : "2020-07-07T14:15:00Z"
  }
}