CVE-2021-3603 (High) detected in phpmailer/phpmailer-v6.1.6

[mend-bolt-for-github]

CVE-2021-3603 - High Severity Vulnerability

Vulnerable Library - phpmailer/phpmailer-v6.1.6

PHPMailer is a full-featured email creation and transfer class for PHP

Library home page: https://api.github.com/repos/PHPMailer/PHPMailer/zipball/c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3

Dependency Hierarchy:

• ❌ phpmailer/phpmailer-v6.1.6 (Vulnerable Library)

Found in HEAD commit: a406daa2556a3c26adaf9e56b6a36f57a1324755

Found in base branch: master

Vulnerability Details

PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php' (the default, defined by PHPMailer::$validator), and the global namespace contains a function called php, it will be called in preference to the built-in validator of the same name. Mitigated in PHPMailer 6.5.0 by denying the use of simple strings as validator function names.

Publish Date: 2021-06-17

URL: CVE-2021-3603

CVSS 3 Score Details (8.1)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3603

Release Date: 2021-06-17

Fix Resolution: v6.5.0

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