CVE-2019-20455: Globalpayments/php sdk Improper Certificate Validation Vulnerability

MODERATE
Advisory Identifier: GHSA-pm77-c4q7-3fwj
Share
CVSS 5.9
CWE-295
Published
Advisory Summary

CVE-2019-20455 is a MODERATE (CVSS 5.9) improper certificate validation vulnerability (CWE-295: Improper Certificate Validation) affecting Globalpayments/php sdk libraries in the Packagist ecosystem. The issue involves improper certificate validation in heartland & global payments php sdk. Remediation is available by upgrading affected packages to version 2.0.0.

CVE-2019-20455 at a Glance

CVE Identifier CVE-2019-20455
GHSA Identifier GHSA-pm77-c4q7-3fwj
Severity MODERATE
CVSS v3.1 Base Score 5.9
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Globalpayments/php sdk
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.9

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

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2019-20455

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

globalpayments/php-sdk fixed: 2.0.0 
Upgrade globalpayments/php-sdk to 2.0.0
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 globalpayments/php-sdk

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-20455, inspect your project dependencies for Globalpayments/php sdk:

inspect dependencies for globalpayments/php-sdk

Analyze the terminal output to locate any version of Globalpayments/php sdk in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.0), 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-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Globalpayments/php sdk, 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

Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.

CVE-2019-20455 Affected Globalpayments/php sdk Versions

1 component(s)
Fixed Versions:
2.0.0
Product / Package Ecosystem Affected Versions Fixed Version
globalpayments/php-sdk
 Packagist
< 2.0.0
2.0.0

References

NVD — CVE-2019-20455 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-20455
Globalpayments/php sdk Source Repository REPOSITORY
https://github.com/globalpayments/php-sdk/pull/8
Globalpayments/php sdk Source Repository REPOSITORY
https://github.com/globalpayments/php-sdk/pull/8/commits/c86e18f28c5eba0d6ede7d557756d978ea83d3c9
Globalpayments/php sdk Source Repository REPOSITORY
https://github.com/globalpayments/php-sdk
Globalpayments/php sdk Source Repository REPOSITORY
https://github.com/globalpayments/php-sdk/compare/1.3.3...2.0.0
Globalpayments/php sdk Release RELEASE
https://github.com/globalpayments/php-sdk/releases/tag/2.0.0
winterdragon.ca/global-payments-vul... WEB
https://winterdragon.ca/global-payments-vulnerability

Frequently Asked Questions

What is CVE-2019-20455?
CVE-2019-20455 is a security vulnerability in Globalpayments/php sdk involving Improper Certificate Validation in Heartland & Global Payments PHP SDK under CWE-295: Improper Certificate Validation.
Which Globalpayments/php sdk versions are affected?
Affected versions include releases prior to 2.0.0 across affected packages: globalpayments/php-sdk.
What version fixes CVE-2019-20455?
Upgrading to 2.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is globalpayments/php-sdk affected?
Yes, globalpayments/php-sdk is affected in releases prior to 2.0.0. Upgrade your dependency to 2.0.0 or later.
What is the CVSS score of CVE-2019-20455?
CVE-2019-20455 has a CVSS v3.1 base score of 5.9 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2019-20455?
CVE-2019-20455 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check Packagist dependencies for CVE-2019-20455?
Run the dependency tree command: 'inspect dependencies for globalpayments/php-sdk'. 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-pm77-c4q7-3fwj",
  "modified" : "2021-10-08T22:58:55Z",
  "published" : "2021-10-12T16:31:12Z",
  "aliases" : [ "CVE-2019-20455" ],
  "summary" : "Improper Certificate Validation in Heartland & Global Payments PHP SDK",
  "details" : "Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "globalpayments/php-sdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-20455"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/globalpayments/php-sdk/pull/8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/globalpayments/php-sdk/pull/8/commits/c86e18f28c5eba0d6ede7d557756d978ea83d3c9"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/globalpayments/php-sdk"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/globalpayments/php-sdk/compare/1.3.3...2.0.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/globalpayments/php-sdk/releases/tag/2.0.0"
  }, {
    "type" : "WEB",
    "url" : "https://winterdragon.ca/global-payments-vulnerability"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-10-08T22:58:55Z",
    "nvd_published_at" : "2020-02-14T16:15:00Z"
  }
}