CVE-2017-18077

index.js in brace-expansion before 1.1.7 is vulnerable to Regular Expression Denial of Service (ReDoS) attacks, as demonstrated by an expand argument containing many comma characters.

index.js in brace-expansion before 1.1.7 is vulnerable to Regular Expression Denial of Service (ReDoS) attacks, as demonstrated by an expand argument containing many comma characters.

Affected versions of `brace-expansion` are vulnerable to a regular expression denial of service condition. ## Proof of Concept ``` var expand = require('brace-expansion'); expand('{,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,\n}'); ``` ## Recommendation Update to version 1.1.7 or later.

Affected versions of `brace-expansion` are vulnerable to a regular expression denial of service condition. ## Proof of Concept ``` var expand = require('brace-expansion'); expand('{,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,\n}'); ``` ## Recommendation Update to version 1.1.7 or later.

index.js en brace-expansion en versiones anteriores a la 1.1.7 es vulnerable a ataques ReDoS (denegación de servicio con expresiones regulares), tal y como demuestra un argumento expand que contiene muchas comas.