Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXBmOGYtdzI2Ny1tcTJo

The rack-cors rubygem may allow directory traveral

An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.

Permalink: https://github.com/advisories/GHSA-pf8f-w267-mq2h
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXBmOGYtdzI2Ny1tcTJo
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 5 years ago
Updated: almost 2 years ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Percentage: 0.00422
EPSS Percentile: 0.73922

Identifiers: GHSA-pf8f-w267-mq2h, CVE-2019-18978
References:

• https://nvd.nist.gov/vuln/detail/CVE-2019-18978
• https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d
• https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4
• https://lists.debian.org/debian-lts-announce/2020/02/msg00004.html
• https://lists.debian.org/debian-lts-announce/2020/10/msg00000.html
• https://usn.ubuntu.com/4571-1/
• https://www.debian.org/security/2021/dsa-4918
• https://github.com/advisories/GHSA-pf8f-w267-mq2h

Repository: https://github.com/cyu/rack-cors
Blast Radius: 24.7

Affected Packages