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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- 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 ↗