Package Instance

Apache Kylin has Insufficiently Protected Credentials
In Apache Kylin version 2.0.0 to 4.0.3, there is a Server Config web interface that displays the content of file 'kylin.properties', that may contain serverside credentials. When the kylin service runs over HTTP (or other plain text protocol), it is possible for network sniffers to hijack the HTTP payload and get access to the content of kylin.properties and potentially the containing credentials.

To avoid this threat, users are recommended to

*  Always turn on HTTPS so that network payload is encrypted.

*  Avoid putting credentials in kylin.properties, or at least not in plain text.
*  Use network firewalls to protect the serverside such that it is not accessible to external attackers.

*  Upgrade to version Apache Kylin 4.0.4, which filters out the sensitive content that goes to the Server Config web interface.

Inadequate Encryption Strength
Apache Kylin provides encryption classes PasswordPlaceholderConfigurer to help users encrypt their passwords. In the encryption algorithm used by this encryption class, the cipher is initialized with a hardcoded key and IV. If users use class PasswordPlaceholderConfigurer to encrypt their password and configure it into kylin's configuration file, there is a risk that the password may be decrypted. This issue affects Apache Kylin 2 and prior versions; Apache Kylin 3 and prior versions; Apache Kylin 4 and prior versions.

Insecure Storage of Sensitive Information
Apache Kylin has one restful api which exposed Kylin's configuration information without any authentication, so it is dangerous because some confidential information entries will be disclosed to everyone.

Insufficiently Protected Credentials
In Apache Kylin, Cross-origin requests with credentials are allowed to be sent from any origin. This issue affects Apache Kylin 2 and prior versions; Apache Kylin 3 and prior versions; Apache Kylin 4 and prior versions.

SQL Injection
Kylin concatenates and executes a Hive SQL in Hive CLI or beeline when building a new segment; some part of the HQL is from system configurations, while the configuration can be overwritten by certain rest api, which makes SQL injection attack is possible.

Exposure of Resource to Wrong Sphere
Apache Kylin allows users to read data from other database systems using JDBC. The MySQL JDBC driver supports certain properties, which, if left unmitigated, can allow an attacker to execute arbitrary code from a hacker-controlled malicious MySQL server within Kylin server processes. This issue affects Apache Kylin 2 and prior versions; Apache Kylin 3 and prior versions.

Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 and prior versions; Apache Kylin 3 and prior versions; Apache Kylin 4 and prior versions.

Apache Kylin Session Fixation vulnerability
Session Fixation vulnerability in Apache Kylin.

This issue affects Apache Kylin: from 2.0.0 through 4.x.

Users are recommended to upgrade to version 5.0.0 or above, which fixes the issue.