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Date: Sun, 7 Apr 2019 12:30:32 +0300
From: Henri Salo <henri@...v.fi>
To: oss-security@...ts.openwall.com
Subject: Re: XSS in roundup bug tracker 404 page

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Hash: SHA256

On Fri, Apr 05, 2019 at 11:45:01AM +0200, Hanno Böck wrote:
> I recently discovered that the python bug tracker had a trivial
> reflected Cross Site Scripting vulnerability on the 404 error page.
> 
> It essentially just reflected the URL path, so anything like
> http://hostname/<img src=x onerror=alert(1)>
> (properly URL-encoded, but browsers do this automatically)
> would result in XSS.
> 
> The software python is using here is the Roundup issue tracker, it's
> been reported there as well [2] and fixed in their repo (but no release
> yet).
> 
> [1] https://github.com/python/bugs.python.org/issues/34
> [2] https://issues.roundup-tracker.org/issue2551035

MITRE assigned CVE-2019-10904 for this vulnerability.

- -- 
Henri Salo
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