CVE-2021-23354 Information

Description

The package printf before 0.6.1 are vulnerable to Regular Expression Denial of Service (ReDoS) via the regex string /%(?:(([\w_.]+))|([1-9]\d)$)?([0 +-])(|\d+)?(.)?(|\d+)?[hlL]?([%bscdeEfFgGioOuxX])/g in lib/printf.js. The vulnerable regular expression has cubic worst-case time complexity.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://snyk.io/vuln/SNYK-JS-PRINTF-1072096 https://github.com/adaltas/node-printf/issues/31 https://github.com/adaltas/node-printf/pull/32

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5