CVE-2020-13688: Drupal Core Cross-site scripting vulnerability
Summary
CVE-2020-13688: Drupal Core Cross-site scripting vulnerability. Affects drupal/core across 3 version ranges.
>= 8.8.0, < 8.8.10
>= 8.9.0, < 8.9.6
>= 9.0.0, < 9.0.6
Fixed in 8.8.10, 8.9.6 or 9.0.6, depending on the release line you run. How to fix ↓
Also tracked for
- drupal · Bitnami
The same CVE-2020-13688 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
Drupal Core is a popular content management system (CMS) used for building websites and applications. It provides a flexible and extensible platform for creating and managing digital content. The vulnerability identified as CVE-2020-13688 is a cross-site scripting (XSS) vulnerability that affects certain versions of Drupal Core. XSS vulnerabilities allow attackers to inject malicious scripts into web pages viewed by users, potentially leading to unauthorized access, data theft, or other malicious activities.
Vulnerability Detail
The CVE-2020-13688 vulnerability in Drupal Core arises from the way HTML is rendered for affected forms. Attackers can exploit this vulnerability by injecting malicious scripts into the affected forms, which are then executed when viewed by users. This can lead to various consequences, such as session hijacking, defacement of web pages, or stealing sensitive information. The vulnerability affects Drupal Core versions 8.8.X prior to 8.8.10, 8.9.X prior to 8.9.6, and 9.0.X prior to 9.0.6.
How To Fix
Fixed versions by release line
The minimum fixed version depends on the release line you run.
-
>= 8.8.0, < 8.8.108.8.10composer require drupal/core:8.8.10 -
>= 8.9.0, < 8.9.68.9.6composer require drupal/core:8.9.6 -
>= 9.0.0, < 9.0.69.0.6composer require drupal/core:9.0.6
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Workaround
If upgrading immediately is not feasible, a temporary workaround can be implemented by disabling affected forms or applying input validation and sanitization techniques to prevent the execution of malicious scripts. However, this workaround may not provide complete protection and should be considered a temporary measure until the system can be upgraded to a patched version.
Conclusion
The CVE-2020-13688 vulnerability in Drupal Core is a cross-site scripting (XSS) vulnerability that can be exploited by attackers to inject and execute malicious scripts. Upgrading to the latest version of Drupal Core is the recommended solution to fix the vulnerability and ensure the security of the system. If immediate upgrade is not possible, applying temporary workarounds and implementing input validation and sanitization techniques can provide some level of protection. For further assistance and support in vulnerability remediation, please contact DevNack.com.
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FAQ
Drupal Core is a content management system (CMS) used for building websites and applications. It provides a flexible and extensible platform for creating and managing digital content.
Cross-site scripting (XSS) is a type of vulnerability that allows attackers to inject malicious scripts into web pages viewed by users. This can lead to unauthorized access, data theft, or other malicious activities.
The vulnerability affects Drupal Core versions 8.8.X prior to 8.8.10, 8.9.X prior to 8.9.6, and 9.0.X prior to 9.0.6.
The vulnerability can be exploited by attackers to perform various malicious activities, such as session hijacking, defacement of web pages, or stealing sensitive information.
To protect your system, it is recommended to upgrade to the latest version of Drupal Core. Additionally, implementing input validation and sanitization techniques can help mitigate the risk of XSS attacks.
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