KenticoCVEs & Vulnerabilities

An authenticated remote code execution in Kentico Xperience allows authenticated users Staging Sync Server to upload arbitrary data to path relative locations. This results in path traversal and arbitrary file upload, including content that can be executed server side leading to remote code execution.This issue affects Kentico Xperience through 13.0.178.

The Kentico Xperience application does not fully validate or filter files uploaded via the multiple-file upload functionality, which allows for stored XSS.This issue affects Kentico Xperience through 13.0.178.

An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server component password handling for the server defined None type. Authentication bypass allows an attacker to control administrative objects.This issue affects Xperience through 13.0.178.

An authentication bypass vulnerability in Kentico Xperience allows authentication bypass via the Staging Sync Server password handling of empty SHA1 usernames in digest authentication. Authentication bypass allows an attacker to control administrative objects.This issue affects Xperience through 13.0.172.

Kentico Xperience before 13.0.178 has a specific set of allowed ContentUploader file extensions for unauthenticated uploads; however, because .zip is processed through TryZipProviderSafe, there is additional functionality to create files with other extensions. NOTE: this is a separate issue not necessarily related to SVG or XSS.

Kentico Xperience before 13.0.181 allows authenticated users to distribute malicious content (for stored XSS) via certain interactions with the media library file upload feature.

An unsafe reflection vulnerability in Kentico Xperience allows an unauthenticated attacker to kill the current process, leading to a Denial-of-Service condition. This issue affects Xperience: through 13.0.180.

In Kentico before 13.0.66, attackers can achieve Denial of Service via a crafted request to the GetResource handler.

Kentico CMS before 13.0.66 has an Insecure Direct Object Reference vulnerability. It allows an attacker with user management rights (default is Administrator) to export the user options of any user, even ones with higher privileges (like Global Administrators) than the current user. The exported XML contains every option of the exported user (even the hashed password).

An issue was discovered in Kentico 12.0.x before 12.0.15, 11.0.x before 11.0.48, 10.0.x before 10.0.52, and 9.x versions. Due to a failure to validate security headers, it was possible for a specially crafted request to the staging service to bypass the initial authentication and proceed to deserialize user-controlled .NET object input. This deserialization then led to unauthenticated remote code execution on the server where the Kentico instance was hosted.

Kentico Xperience 13.0.44 allows XSS via an XML document to the Media Libraries subsystem.

The Kentico Xperience CMS version 13.0 – 13.0.43 is vulnerable to a persistent Cross-Site Scripting (XSS) vulnerability (also known as Stored or Second-Order XSS). Persistent XSS vulnerabilities occur when the application stores and retrieves client supplied data without proper handling of dangerous content. This type of XSS vulnerability is exploited by submitting malicious script content to the application which is then retrieved and executed by other application users. The attacker could exploit this to conduct a range of attacks against users of the affected application such as session hijacking, account take over and accessing sensitive data.

The Blog module in Kentico CMS 5.5 R2 build 5.5.3996 allows SQL injection via the tagname parameter.

Cross Site Scripting (XSS) vulnerability in Kentico before 12.0.75.

Kentico before 12.0.50 allows file uploads in which the Content-Type header is inconsistent with the file extension, leading to XSS.

Kentico 11 through 12 lets attackers upload and explore files without authentication via the cmsmodules/medialibrary/formcontrols/liveselectors/insertimageormedia/tabs_media.aspx URI. NOTE: The vendor disputes the report because the researcher did not configure the media library permissions correctly. The vendor states that by default all users can read/modify/upload files, and it’s up to the administrator to decide who should have access to the media library and set the permissions accordingly. See the vendor documentation in the references for more information

Kentico CMS before 11.0.45 allows unrestricted upload of a file with a dangerous type.

Kentico v10.0.42 allows Global Administrators to read the cleartext SMTP Password by navigating to the SMTP configuration page. NOTE: the vendor considers this a best-practice violation but not a vulnerability. The vendor plans to fix it at a future time

Kentico 9.0 before 9.0.51 and 10.0 before 10.0.48 allows remote attackers to obtain Global Administrator access by visiting CMSInstall/install.aspx and then navigating to the CMS Administration Dashboard.

Kentico 10 before 10.0.50 and 11 before 11.0.3 has SQL injection in the administration interface.

Kentico 10 before 10.0.50 and 11 before 11.0.3 has XSS in which a crafted URL results in improper construction of a system page.

Reflected Cross-Site Scripting vulnerability in "Design" on "Edit device layout" in Kentico 9 through 11 allows remote attackers to execute malicious JavaScript via a malicious devicename parameter in a link that is entered via the "Pages -> Edit template properties -> Device Layouts -> Create device layout (and edit created device layout) -> Design" screens. NOTE: the vendor has responded that there is intended functionality for authorized users to edit and update ascx code layout

Arbitrary code execution vulnerability in Kentico 9 through 11 allows remote authenticated users to execute arbitrary operating system commands in a dynamic .NET code evaluation context via C# code in a "Pages -> Edit -> Template -> Edit template properties -> Layout" box. NOTE: the vendor has responded that there is intended functionality for authorized users to edit and update ascx code layout

Kentico 9.0 through 11.0 has a stack-based buffer overflow via the SqlName, SqlPswd, Database, UserName, or Password field in a SilentInstall XML document. NOTE: the vendor disputes this issue because neither a buffer overflow nor a crash can be reproduced; also, reading XML documents is implemented exclusively with managed code within the Microsoft .NET Framework

Open redirect vulnerability in CMSPages/GetDocLink.ashx in Kentico CMS 8.2 through 8.2.41 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the link parameter.

Multiple cross-site scripting (XSS) vulnerabilities in Kentico CMS 8.2 allow remote attackers to inject arbitrary web script or HTML via a (1) parameter name to CMSModules/AdminControls/Pages/UIPage.aspx or the (2) CMSBodyClass cookie variable to the default URI.