Deserialization of Untrusted Data Affecting c1cms.assemblies package, versions [,6.12.8122.18346)


0.0
high

Snyk CVSS

    Attack Complexity Low
    Availability High

    Threat Intelligence

    EPSS 0.07% (28th percentile)
Expand this section
NVD
7.6 high

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk ID SNYK-DOTNET-C1CMSASSEMBLIES-2466107
  • published 10 Apr 2022
  • disclosed 30 Mar 2022
  • credit Jaroslav Lobačevski (@JarLob)

How to fix?

Upgrade C1CMS.Assemblies to version 6.12.8122.18346 or higher.

Overview

C1CMS.Assemblies is a .NET based Web Content Management System.

Affected versions of this package are vulnerable to Deserialization of Untrusted Data leading to an authenticated user causing the server to make arbitrary GET requests to other servers in the local network or on localhost. The attacker may also truncate arbitrary files to zero size (effectively delete them) leading to a denial of service (DoS) or altering application logic. The authenticated user may unknowingly perform the actions by visiting a specially crafted site.

Details

Serialization is a process of converting an object into a sequence of bytes which can be persisted to a disk or database or can be sent through streams. The reverse process of creating object from sequence of bytes is called deserialization. Serialization is commonly used for communication (sharing objects between multiple hosts) and persistence (store the object state in a file or a database). It is an integral part of popular protocols like Remote Method Invocation (RMI), Java Management Extension (JMX), Java Messaging System (JMS), Action Message Format (AMF), Java Server Faces (JSF) ViewState, etc.

Deserialization of untrusted data (CWE-502) is when the application deserializes untrusted data without sufficiently verifying that the resulting data will be valid, thus allowing the attacker to control the state or the flow of the execution.