A The string must start with the letter 'A'.This regular expression accomplishes the following: Let’s take the following regular expression as an example: regex = /A(B|C ) D/ Regular expressions are incredibly powerful, but they aren't very intuitive and can ultimately end up making it easy for attackers to take your site down. The Regular expression Denial of Service (ReDoS) is a type of Denial of Service attack. There are many types of DoS attacks, ranging from trying to clog the network pipes to the system by generating a large volume of traffic from many machines (a Distributed Denial of Service - DDoS - attack) to sending crafted requests that cause a system to crash or take a disproportional amount of time to process. Var attack_str = "\u001B[" " ".repeat(i*10000) Ĭonsole.log("attack_str.length: " attack_str.length ": " time_cost " ms")ĭenial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its original and legitimate users. Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) due to the sub-patterns ()# ?]* and PoC import ansiRegex from 'ansi-regex'
0 Comments
Leave a Reply. |