CVE-2006-5734: PHPMailer Local file inclusion
Summary
CVE-2006-5734: PHPMailer Local file inclusion. Affects phpmailer/phpmailer versions < 5.2.0. Fixed in 5.2.0. How to fix ↓
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Background
PHPMailer is a popular open-source library used for sending emails from PHP applications. It provides a simple and convenient way to send emails using various protocols and features. However, a vulnerability was discovered in PHPMailer that allowed arbitrary local file inclusion. This vulnerability could be exploited if the host application passed unfiltered user data into the $lang property. Several applications that used PHPMailer were affected by this issue.
Vulnerability Detail
The vulnerability in PHPMailer allowed an attacker to perform arbitrary local file inclusion by manipulating the $lang property. This could be done remotely if the host application did not properly filter and validate user-supplied data before using it. The impact of this vulnerability could vary depending on the specific application, but it could potentially lead to unauthorized access to sensitive files or remote code execution. The vulnerability was assigned three CVEs: CVE-2006-5734, CVE-2007-3215, and CVE-2007-2021.
How To Fix
Minimum fixed version
5.2.0
This is the first release that contains the fix.
composer require phpmailer/phpmailer:5.2.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
A workaround for this vulnerability is to filter and validate user-supplied data before using it in the $lang property. This can be done by implementing input validation and sanitization techniques, such as using whitelists or regular expressions to restrict the allowed input. Additionally, it is recommended to use a web application firewall (WAF) to provide an additional layer of protection against potential attacks.
Conclusion
The PHPMailer library was vulnerable to arbitrary local file inclusion via the $lang property. This issue was fixed in PHPMailer version 5.2.0. To protect your application, it is important to update PHPMailer to the latest version and ensure that user-supplied data is properly filtered and validated. If you have any further questions or need assistance with vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for phpmailer/phpmailer →
FAQ
The vulnerability affects PHPMailer versions prior to 5.2.0.
The impact of this vulnerability can vary depending on the specific application, but it could potentially lead to unauthorized access to sensitive files or remote code execution.
To fix this vulnerability, you should update your PHPMailer dependency to at least version 5.2.0 and ensure that user-supplied data is properly filtered and validated before using it in the $lang property or any other potentially vulnerable areas.
Yes, a workaround for this vulnerability is to filter and validate user-supplied data before using it in the $lang property. Additionally, using a web application firewall (WAF) can provide an extra layer of protection.
You can find more information about this vulnerability in the National Vulnerability Database (NVD) under the CVE identifiers: CVE-2006-5734, CVE-2007-3215, and CVE-2007-2021.
References
Related vulnerabilities
Recent vulnerabilities recorded for phpmailer/phpmailer.
