Headline
CVE-2021-35065: fix: Resolve ReDoS vulnerability from CVE-2021-35065 (#49) · gulpjs/glob-parent@3e9f04a
The glob-parent package before 6.0.1 for Node.js allows ReDoS (regular expression denial of service) attacks against the enclosure regular expression.
@@ -6,7 +6,6 @@ var isWin32 = require(‘os’).platform() === 'win32’;
var slash = '/’; var backslash = /\\/g; var enclosure = /[{[].*\/.*[}\]]$/; var globby = /(^|[^\\])([{[]|\([^)]+$)/; var escaped = /\\([!*?|[\](){}])/g;
@@ -24,7 +23,7 @@ module.exports = function globParent(str, opts) { }
// special case for strings ending in enclosure containing path separator if (enclosure.test(str)) { if (isEnclosure(str)) { str += slash; }
@@ -39,3 +38,27 @@ module.exports = function globParent(str, opts) { // remove escape chars and return result return str.replace(escaped, ‘$1’); };
function isEnclosure(str) { var lastChar = str.slice(-1)
var enclosureStart; switch (lastChar) { case '}’: enclosureStart = '{’; break; case ']': enclosureStart = '['; break; default: return false; }
var foundIndex = str.indexOf(enclosureStart); if (foundIndex < 0) { return false; }
return str.slice(foundIndex + 1, -1).includes(slash); }
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glob-parent before 6.0.1 is vulnerable to Regular Expression Denial of Service (ReDoS).