Bug 757181 (CVE-2011-4350) - CVE-2011-4350 yaws: Directory traversal flaw
Summary: CVE-2011-4350 yaws: Directory traversal flaw
Alias: CVE-2011-4350
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 757183 757184
TreeView+ depends on / blocked
Reported: 2011-11-25 17:36 UTC by Jan Lieskovsky
Modified: 2019-09-29 12:48 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2019-06-10 10:58:13 UTC

Attachments (Terms of Use)

Description Jan Lieskovsky 2011-11-25 17:36:21 UTC
A directory traversal flaw was found in the way yaws, web server for dynamic content written in Erlang, processed certain URLs. A remote, authenticated yaws user could use this flaw to obtain content of arbitrary local file, available to the yaws server user via specially-crafted URL request.

[1] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=650009
[2] https://github.com/klacke/yaws/issues/69

Comment 1 Jan Lieskovsky 2011-11-25 17:42:11 UTC
Public PoC from [1]:

curl 'http://localhost:8080/..\\..\\..\\..\\/etc/passwd'

I am not sure, versions of yaws, as shipped in Fedora release of 14, 15, and 16, and as shipped with Fedora EPEL 6, are affected by this issue. Have tried above PoC (and couple of its combinations), but was unsuccessful to reproduce the issue (even with 'auth' disabled).

Comment 2 Jan Lieskovsky 2011-11-25 17:42:46 UTC
CVE request:
[3] http://www.openwall.com/lists/oss-security/2011/11/25/5

Comment 3 Jan Lieskovsky 2011-11-25 17:43:46 UTC
Created yaws tracking bugs for this issue

Affects: fedora-all [bug 757183]
Affects: epel-6 [bug 757184]

Comment 4 Peter Lemenkov 2011-11-25 19:30:04 UTC
I'll take a closer look tomorrow on this issue.

Comment 5 Kurt Seifried 2011-11-25 20:36:24 UTC
We don't appear to have fixed CVE-2010-4181 (similar issue, directory traversal)?

Comment 6 Vincent Danen 2011-11-28 18:29:56 UTC
This was assigned CVE-2011-4350:


Comment 7 Product Security DevOps Team 2019-06-10 10:58:13 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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