Description
Is unexpected behavior in a computer program necessarily a vulnerability? Why or why not?
Explanation & Answer
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yes, In computer security overall, a “vulnerability” is a weakness that allows an attacker to reduce a system’s information assurance; an intersection of three elements: a system susceptibility or flaw, attacker access to the flaw, and attacker capability to exploit the flaw. Regarding software, the “bug” is a fault causing it to produce an incorrect or unexpected result, or to behave in unintended (for its developers and users) ways. In other words, a vulnerable software may usually work okay, but when it is approached in a “different manner” (i.e. with malicious intent and appropriate tools), things may happen. And they actually do.
As a rule vulnerabilities are the results of development mistakes, insufficient quality assurance and/or outright wrong approach to coding – when the software is written without security in mind from the day one. Later there could be stacks of patches, making the original package swell twice per its original size, and still there are more and more bugs discovered. Simply because the software is “genetically” vulnerable.
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