PT-2018-6658 · Npm · Brace-Expansion

Myvyang · Published 2018-01-27 · Updated 2018-02-15 · CVE-2017-18077

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: brace-expansion versions prior to 1.1.7

Description: The issue concerns a Regular Expression Denial of Service (ReDoS) condition. It can be triggered by an expand argument containing many comma characters. There is a proof of concept demonstrating the vulnerability using the expand function from the brace-expansion module with an argument containing numerous comma characters.

Recommendations: Update to version 1.1.7 or later. As a temporary workaround, consider restricting the use of the expand function with arguments containing many comma characters until a patch is available.

Exploit

Fix

DoS

RCE

Weakness Enumeration

CWE-1333

CWE-20

Related Identifiers

CVE-2017-18077

GHSA-832H-XG76-4GV6

RHSA-2020:2625

Affected Products

Brace-Expansion

References · 13

• 🔥 https://github.com/juliangruber/brace-expansion/issues/33 · Exploit
• 🔥 https://nodesecurity.io/advisories/338 · Exploit
• https://github.com/juliangruber/brace-expansion/pull/35/commits/b13381281cead487cbdbfd6a69fb097ea5e456c3 · Patch
• https://security-tracker.debian.org/tracker/CVE-2017-18077 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18077 · Security Note
• https://osv.dev/vulnerability/GHSA-832h-xg76-4gv6 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-18077 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-18077 · Vendor Advisory
• https://github.com/juliangruber/brace-expansion · Note
• https://github.com/juliangruber/brace-expansion/pull/35 · Note
• https://github.com/advisories/GHSA-832h-xg76-4gv6 · Note
• https://bugs.debian.org/862712 · Note
• https://npmjs.com/advisories/338 · Note