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The concept behind a fork bomb — the processes continually replicate themselves, potentially causing a denial of service. In computing, a fork bomb (also called rabbit virus) is a denial-of-service (DoS) attack wherein a process continually replicates itself to deplete available system resources, slowing down or crashing the system due to resource starvation.
Article mentions that bash fork bomb was created by Jaromil in 2002. I was able to find posts of a polish white hat - lcamtuf from 1999 in usenet, in which he had this fork bomb in his signature. Necc 17:25, 13 March 2008 (UTC) If you can cite a source of this update the page ;) You might want to tell Jaromil too!
Fork and its variants are typically the only way of doing so in Unix-like systems. For a process to start the execution of a different program, it first forks to create a copy of itself. Then, the copy, called the " child process ", calls the exec system call to overlay itself with the other program: it ceases execution of its former program in ...
The wait call may be executed in sequential code, but it is commonly executed in a handler for the SIGCHLD signal, which the parent receives whenever a child has died. After the zombie is removed, its process identifier (PID) and entry in the process table can then be reused.
When starvation is impossible in a concurrent algorithm, the algorithm is called starvation-free, lockout-freed [2] or said to have finite bypass. [3] This property is an instance of liveness , and is one of the two requirements for any mutual exclusion algorithm; the other being correctness .
Resource exhaustion attacks are computer security exploits that crash, hang, or otherwise interfere with the targeted program or system.They are a form of denial-of-service attack but are different from distributed denial-of-service attacks, which involve overwhelming a network host such as a web server with requests from many locations.
In C++, because dereferencing a null pointer is undefined behavior, compiler optimizations may cause other checks to be removed, leading to vulnerabilities elsewhere in the code. [ 29 ] [ 30 ] Some lists may also include race conditions (concurrent reads/writes to shared memory) as being part of memory safety (e.g., for access control).
The Rabbit (or Wabbit) virus, more a fork bomb than a virus, is written. The Rabbit virus makes multiple copies of itself on a single computer (and was named "rabbit" for the speed at which it did so) until it clogs the system, reducing system performance, before finally reaching a threshold and crashing the computer. [10]