Bolt CMS Authenticated Remote Code Execution via Profile Injection and File Rename

Bolt CMS versions 3.7.0 and earlier contain a chain of vulnerabilities that together allow an authenticated user to achieve remote code execution. A user with valid credentials can inject arbitrary PHP code into the displayname field of the user profile, which is rendered unsanitized in backend templates. The attacker can then list and rename cached session files via the /async/browse/cache/.sessions and /async/folder/rename endpoints. By renaming a .session file to a path under the publicly accessible /files/ directory with a .php extension, the attacker can turn the injected code into an executable web shell. Finally, the attacker triggers the payload via a crafted HTTP GET request to the rogue file. NOTE: The vendor announced that Bolt 3 reached end-of-life after 31 December 2021.

Bolt CMS 3.2.14 allows stored XSS by uploading an SVG document with a "Content-Type: image/svg+xml" header.

Bolt CMS 3.2.14 allows stored XSS via text input, as demonstrated by the Title field of a New Entry.

Bolt before 3.3.6 does not properly restrict access to _profiler routes, related to EventListener/ProfilerListener.php and Provider/EventListenerServiceProvider.php.

The theme editor in Bolt before 2.2.5 does not check the file extension when renaming files, which allows remote authenticated users to execute arbitrary code by renaming a crafted file and then directly accessing it.

Bolt CMS Entry Preview page cross site scripting

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in Bolt CMS 3.7.1. It has been rated as problematic. This issue affects some unknown processing of the file /preview/page of the component Entry Preview Handler. The manipulation of the argument body leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-273167. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed that the affected release tree is end-of-life.

Bolt CMS Showcase Creation showcases cross site scripting

A vulnerability classified as problematic has been found in Bolt CMS 3.7.1. Affected is an unknown function of the file /bolt/editcontent/showcases of the component Showcase Creation Handler. The manipulation of the argument title/textarea leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. NOTE: This vulnerability only affects products that are no longer supported by the maintainer. NOTE: Vendor was contacted early and confirmed that the affected release tree is end-of-life.

The foldername parameter in Bolt 5.1.7 was discovered to have incorrect input validation, allowing attackers to perform directory enumeration or cause a Denial of Service (DoS) via a crafted input.

Controller/Backend/FileEditController.php and Controller/Backend/FilemanagerController.php in Bolt before 4.1.13 allow Directory Traversal.

The filename of uploaded files vulnerable to stored XSS in Bolt CMS

In Bolt CMS before version 3.7.1, the filename of uploaded files was vulnerable to stored XSS. It is not possible to inject javascript code in the file name when creating/uploading the file. But, once created/uploaded, it can be renamed to inject the payload in it. Additionally, the measures to prevent renaming the file to disallowed filename extensions could be circumvented. This is fixed in Bolt 3.7.1.

CSRF issue on preview pages in Bolt CMS

Bolt CMS before version 3.7.1 lacked CSRF protection in the preview generating endpoint. Previews are intended to be generated by the admins, developers, chief-editors, and editors, who are authorized to create content in the application. But due to lack of proper CSRF protection, unauthorized users could generate a preview. This has been fixed in Bolt 3.7.1

Bolt before 3.7.2 does not restrict filter options in a Request in the Twig context, and is therefore inconsistent with the "How to Harden Your PHP for Better Security" guidance.

Bolt 3.6.4 has XSS via the slug, teaser, or title parameter to editcontent/pages, a related issue to CVE-2017-11128 and CVE-2018-19933.

Controller/Async/FilesystemManager.php in the filemanager in Bolt before 3.6.5 allows remote attackers to execute arbitrary PHP code by renaming a previously uploaded file to have a .php extension.

Bolt 3.7.0, if Symfony Web Profiler is used, allows XSS because unsanitized search?search= input is shown on the _profiler page. NOTE: this is disputed because profiling was never intended for use in production. This is related to CVE-2018-12040

Bolt before 3.6.10 has XSS via createFolder or createFile in Controller/Async/FilesystemManager.php.

Bolt before 3.6.10 has XSS via an image's alt or title field.

Bolt before 3.6.10 has XSS via a title that is mishandled in the system log.

Cross Site Request Forgery (CSRF) in the bolt/upload File Upload feature in Bolt CMS 3.6.6 allows remote attackers to execute arbitrary code by uploading a JavaScript file to include executable extensions in the file/edit/config/config.yml configuration file.