Vulnerabilities > CVE-2018-18325 - Inadequate Encryption Strength vulnerability in Dnnsoftware Dotnetnuke

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
NONE
Availability impact
NONE
network
low complexity
dnnsoftware
CWE-326
exploit available
metasploit

Summary

DNN (aka DotNetNuke) 9.2 through 9.2.2 uses a weak encryption algorithm to protect input parameters. NOTE: this issue exists because of an incomplete fix for CVE-2018-15811.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Brute Force
    In this attack, some asset (information, functionality, identity, etc.) is protected by a finite secret value. The attacker attempts to gain access to this asset by using trial-and-error to exhaustively explore all the possible secret values in the hope of finding the secret (or a value that is functionally equivalent) that will unlock the asset. Examples of secrets can include, but are not limited to, passwords, encryption keys, database lookup keys, and initial values to one-way functions. The key factor in this attack is the attackers' ability to explore the possible secret space rapidly. This, in turn, is a function of the size of the secret space and the computational power the attacker is able to bring to bear on the problem. If the attacker has modest resources and the secret space is large, the challenge facing the attacker is intractable. While the defender cannot control the resources available to an attacker, they can control the size of the secret space. Creating a large secret space involves selecting one's secret from as large a field of equally likely alternative secrets as possible and ensuring that an attacker is unable to reduce the size of this field using available clues or cryptanalysis. Doing this is more difficult than it sounds since elimination of patterns (which, in turn, would provide an attacker clues that would help them reduce the space of potential secrets) is difficult to do using deterministic machines, such as computers. Assuming a finite secret space, a brute force attack will eventually succeed. The defender must rely on making sure that the time and resources necessary to do so will exceed the value of the information. For example, a secret space that will likely take hundreds of years to explore is likely safe from raw-brute force attacks.
  • Encryption Brute Forcing
    An attacker, armed with the cipher text and the encryption algorithm used, performs an exhaustive (brute force) search on the key space to determine the key that decrypts the cipher text to obtain the plaintext.

Exploit-Db

idEDB-ID:48336
last seen2020-04-16
modified2020-04-16
published2020-04-16
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/48336
titleDotNetNuke - Cookie Deserialization Remote Code Execution (Metasploit)

Metasploit

descriptionThis module exploits a deserialization vulnerability in DotNetNuke (DNN) versions 5.0.0 to 9.3.0-RC. Vulnerable versions store profile information for users in the DNNPersonalization cookie as XML. The expected structure includes a "type" attribute to instruct the server which type of object to create on deserialization. The cookie is processed by the application whenever it attempts to load the current user's profile data. This occurs when DNN is configured to handle 404 errors with its built-in error page (default configuration). An attacker can leverage this vulnerability to execute arbitrary code on the system.
idMSF:EXPLOIT/WINDOWS/HTTP/DNN_COOKIE_DESERIALIZATION_RCE
last seen2020-06-12
modified2020-04-15
published2019-07-15
references
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/http/dnn_cookie_deserialization_rce.rb
titleDotNetNuke Cookie Deserialization Remote Code Excecution

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/157080/dnn_cookie_deserialization_rce.rb.txt
idPACKETSTORM:157080
last seen2020-04-03
published2020-04-03
reporterJon Park
sourcehttps://packetstormsecurity.com/files/157080/DotNetNuke-Cookie-Deserialization-Remote-Code-Execution.html
titleDotNetNuke Cookie Deserialization Remote Code Execution