CVE-2019-18978 — Path Traversal in Project Rack-cors

CWE-22 — Path Traversal9 documents6 sources
Severity
5.3MEDIUMNVD
EPSS
1.0%
top 22.75%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Rack-cors Project Rack-corsDebian Ruby-rack-corsCanonical Ubuntu Linux+1 more
Timeline
PublishedNov 14
Latest updateOct 5

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitability: 3.9 | Impact: 1.4

Affected Packages3 packages

▶debiandebian/ruby-rack-cors< ruby-rack-cors 1.1.1-1 (bookworm)
▶RubyGemsrack-cors_project/rack-cors< 1.0.4

Also affects: Ubuntu Linux 16.04, Debian Linux 10.0, 8.0, 9.0

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

3
OSV
The rack-cors rubygem may allow directory traveral↗2019-11-15
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GHSA
The rack-cors rubygem may allow directory traveral↗2019-11-15
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OSV
CVE-2019-18978: An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1↗2019-11-14
▶

📋Vendor Advisories

2
Ubuntu
rack-cors vulnerability↗2020-10-05
▶
Debian
CVE-2019-18978: ruby-rack-cors - An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1...↗2019
▶

💬Community

3
Bugzilla
CVE-2019-18978 rubygem-rack-cors: allows ../ directory traversal to access private resources [epel-all]↗2019-11-21
▶
Bugzilla
CVE-2019-18978 rubygem-rack-cors: allows ../ directory traversal to access private resources↗2019-11-21
▶
Bugzilla
CVE-2019-18978 rubygem-rack-cors: allows ../ directory traversal to access private resources [fedora-all]↗2019-11-21
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CVE-2019-18978 — Path Traversal in Project Rack-cors | cvebase