Bug 1775111 (CVE-2019-18978) - CVE-2019-18978 rubygem-rack-cors: allows ../ directory traversal to access private resources
Summary: CVE-2019-18978 rubygem-rack-cors: allows ../ directory traversal to access pr...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-18978
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1775112 1775114
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-11-21 12:18 UTC by Dhananjay Arunesh
Modified: 2019-11-21 13:05 UTC (History)
1 user (show)

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Last Closed: 2019-11-21 13:05:00 UTC
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Description Dhananjay Arunesh 2019-11-21 12:18:39 UTC 
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.

Reference:
https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d
https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4
Comment 1 Dhananjay Arunesh 2019-11-21 12:19:04 UTC 
Created rubygem-rack-cors tracking bugs for this issue:

Affects: epel-all [bug 1775114]
Affects: fedora-all [bug 1775112]
Comment 2 Product Security DevOps Team 2019-11-21 13:05:00 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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