The most common attacks that happen to websites are simple to prevent.
OWASP created a list of the top ten website attacks that will help you discover security flaws.
Why should we care?
The abnormal data can trick the interpreter into executing unintended commands or accessing data without proper authorization.
There area few additional detailsthat may be relevant, depending on your specific architecture and context.
not validating a TLS certificate.
Fixing and preventing access control flaws does require a systemic view.
Start from the principle of Least Privilege, and only authorize where necessary.
Additionally, many systems need to consider applying controls on access to users personal datafrom a privacy perspective.
Of course, there is no single setting that would prevent this vulnerability.All potentially vulnerable tweaks should be reviewed.
Note that this also includes timely system updates and patches!
The chief protection against XSS attacks is the use of proper encoding.
Attribute encoding, JavaScript encoding, CSS encoding, and so on.
In specific scenarios, it can even result in remote code implementation and taking over of servers.
The best way to avoid Insecure Deserialization is tonever deserialize objects from untrusted data at all!
For example, in Java it’s possible for you to subclass the java.io.ObjectInputStream class.
Additionally, it’s advisable to only deserialize from data that your system digitally signed.
Any known vulnerabilities found in these dependencies can directly affect your own software as well!
Instead, they remained on a version which was known to allow remote attackers to execute arbitrary commands.
However, a resilient defense should include several layers.
Implement a common logging mechanism for the whole system.
It is best to use an existing library, such as log4J, but it is not required.
The log mechanism should collect all user-initiated actions, runtime errors, and any other sensitive events.
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