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2. Log4Shell - Wikipedia

   en.wikipedia.org/wiki/Log4Shell

   Log4Shell ( CVE-2021-44228) is a zero-day vulnerability in Log4j, a popular Java logging framework, involving arbitrary code execution. [2] [3] The vulnerability had existed unnoticed since 2013 and was privately disclosed to the Apache Software Foundation, of which Log4j is a project, by Chen Zhaojun of Alibaba Cloud 's security team on 24 ...

3. Shellshock (software bug) - Wikipedia

   en.wikipedia.org/wiki/Shellshock_(software_bug)

   Shellshock, also known as Bashdoor, is a family of security bugs in the Unix Bash shell, the first of which was disclosed on 24 September 2014. Shellshock could enable an attacker to cause Bash to execute arbitrary commands and gain unauthorized access [3] to many Internet-facing services, such as web servers, that use Bash to process requests.

4. Secure Shell - Wikipedia

   en.wikipedia.org/wiki/Secure_Shell

   v. t. e. The Secure Shell Protocol ( SSH) is a cryptographic network protocol for operating network services securely over an unsecured network. [1] Its most notable applications are remote login and command-line execution. SSH was designed on Unix-like operating systems, as a replacement for Telnet and for unsecured remote Unix shell protocols ...

5. Shellcode - Wikipedia

   en.wikipedia.org/wiki/Shellcode

   Shellcode. In hacking, a shellcode is a small piece of code used as the payload in the exploitation of a software vulnerability. It is called "shellcode" because it typically starts a command shell from which the attacker can control the compromised machine, but any piece of code that performs a similar task can be called shellcode.

6. Cross-site scripting - Wikipedia

   en.wikipedia.org/wiki/Cross-site_scripting

   Cross-site scripting. Cross-site scripting ( XSS) is a type of security vulnerability that can be found in some web applications. XSS attacks enable attackers to inject client-side scripts into web pages viewed by other users. A cross-site scripting vulnerability may be used by attackers to bypass access controls such as the same-origin policy.

7. Code injection - Wikipedia

   en.wikipedia.org/wiki/Code_injection

   Code injection. Code injection is the exploitation of a computer bug that is caused by processing invalid data. The injection is used by an attacker to introduce (or "inject") code into a vulnerable computer program and change the course of execution. The result of successful code injection can be disastrous, for example, by allowing computer ...