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JNDI injection. Log4Shell case study

On December 10, 2021, Apache released a fix for CVE-2021-44228, a critical RCE vulnerability affecting Log4j that is being exploited in the wild.

Avoiding injection vulnerabilities

Injection attacks refer to a broad class of attack vectors. In an injection attack, an attacker supplies untrusted input to a program. This input gets processed by an interpreter as part of a command or query. In turn, this alters the execution of that program.

Avoiding XSS injection vulnerabilities

In this section, we'll describe some general principles for preventing cross-site scripting vulnerabilities and ways of using various common technologies

Avoiding Templates injection

The best way to prevent server-side template injection is to not allow any users to modify or submit new templates.

Avoiding other injections

Secure coding practices prescribe that spring expressions using dynamic values should be avoided.