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Our free monthly newsletter gives you tips on how to secure your Oracle databases. Topics include database security best practices, data encryption, backup strategies, and much more.
The 10 Most Common Vulnerabilities in Oracle Databases
The 10 most common vulnerabilities in the oracle database are listed below:
- SQL Injection – allows an attacker to run arbitrary SQL commands on your database. This is the most common type of attack against any database.
- Buffer Overflow – An overflow of a buffer in the client or server program that is handling the data. For example, if a client sends more data than is handled by the server program, the server will allocate a bigger buffer to hold the data. However, if the buffer is too big, an attacker can overwrite other parts of memory which contain important information. This allows him to execute arbitrary code on your server.
- LFI/RFI – Local File Inclusion/Remote File Inclusion. This allows an attacker to include a file from the local system in a request sent to the server. If the file exists on the server, it will be executed. If it doesn’t exist, the server will create the file and send it back to the client.
- Heap Overflow – When a program attempts to allocate more memory than is available, it often causes the data being manipulated by the program to be corrupted.
5. Hence, an attacker can exploit this by sending a request with an unusually large number of parameters which will force the server to attempt to allocate more memory. This will cause the heap to overflow and allow the attacker to corrupt other parts of the server’s memory.
- Missing Trust Model – When a client does not trust the server, it will not allow the server to create or modify any files on its local hard drive. Hence, if a file exists on the server which the client does not trust, it will not be executed. If a file does not exist on the server, the client will create it and send it back to the server.
- Weak password management
Passwords are often stored in plain text in files that are world-readable. This allows anyone who has access to those files to see the passwords. An attacker can then use this information to gain access to other accounts which are using the same password.
- Database security patches not applied
Many database servers do not apply critical security patches when they become available. This allows attackers to exploit known vulnerabilities in the database software.
- Configurations with weak or no encryption Many configurations do not use encryption to protect certain types of data.
- the server has not configured a firewall to block outbound connections from untrusted IP addresses This is a common mistake made by people who have just started managing their own server. If you don’t know what an “outbound connection” is, think of it as a phone call you would make to someone else’s phone (like your client’s phone).
If you are responsible for maintaining any type of database — whether it’s an Oracle database, MySQL database, Microsoft SQL Server database, or anything else — then you need to be aware of these 10 vulnerabilities.
The Top Ways Your Employee Could Steal Your Company’s Data
.. And What You Can Do About It! By: Brian Keith Voiles June 22, 2005 Introduction As a general rule, nothing is as valuable as the data stored in your organization’s database systems. Unfortunately, as simple as that rule sounds, there are many ways an employee of your company could steal your organization’s data — even if that employee does not have direct access to your database servers.
How To Protect Your Oracle Database From Hackers And Idiots
if ports are open and the database has weak password management if OS is unpatched (and you are too stupid to realize it!) How To Prevent SQL Injection Attacks (Even If You Are Too Stupid To Fix The First Problem!) How To Prevent Brute-Force Attacks On Passwords (Even If You Are Too Stupid To Change Them!) How To Prevent Config File Corruption (And Make Sure You Don’t Lose All Those Good Employees!) In this issue, I’m going to focus on just one way your employees could steal your organization’s data — by modifying data in your database directly through some type of SQL injection attack. What Is An SQL Injection Attack? An SQL injection attack is a bit of programming trickery used by hackers to access and modify data in your database. Basically, what happens is, an attacker sends a very long string of characters to your database server.
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