CVE-2021-45458: Apache Kylin: Hardcoded credentials

["Xiaoxiang Yu" <xxyu () apache org>]

Severity: moderate

Description:

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 Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior 
versions; Apache Kylin 4 version 4.0.0 and prior versions.

Mitigation:

Users of Kylin 2.x & Kylin 3.x should upgrade to 3.1.3 or apply patch https://github.com/apache/kylin/pull/1782.
Users of Kylin 4.x should upgrade to 4.0.1 or apply patch https://github.com/apache/kylin/pull/1781.

After upgrading, users can configure the value of `kylin.security.encrypt.cipher.ivSpec` in kylin.properties for 
encryption algorithm, and then re-encrypt the password they need to encrypt.

Credit:

Alvaro Munoz 

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Best wishes to you ! 
From ：Xiaoxiang Yu