Bug 435902 (CVE-2008-1145)

Summary:	CVE-2008-1145 ruby: webrick directory traversal
Product:	[Other] Security Response	Reporter:	Mark J. Cox <mjc>
Component:	vulnerability	Assignee:	Akira TAGOH <tagoh>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	kreilly, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2009-01-09 09:41:51 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Mark J. Cox 2008-03-04 11:24:58 UTC

http://www.ruby-lang.org/en/news/2008/03/03/webrick-file-access-vulnerability/

WEBrick, a standard library of Ruby to implement HTTP servers, has file access
vulnerability.

   1. Systems that accept backslash (\) as a path separator, such as Windows.
   2. Systems that use case insensitive filesystems such as NTFS on Windows, HFS
      on Mac OS X.

Attacker can access private files by sending a url with url encoded backslash
(\). This works only on systems that accept backslash as a path separator.  Or
they could bypass restrictions with case-insensitive filesystems.

Comment 1 Mark J. Cox 2008-03-04 11:26:59 UTC

Note: This is only a security issue if you have a ruby application using WEBrick
to serve content via HTTP from a mounted filesystem that is case insensitive or
accepts \ as a path separator, therefore setting to low security severity.

Comment 2 Tomas Hoger 2008-03-05 16:37:40 UTC

CVE-2008-1145:

Directory traversal vulnerability in WEBrick 1.8 before 1.8.5-p115 and
1.8.6-p114, and 1.9 through 1.9.0-1, when running on systems that
support backslash (\) path separators or case-insensitive file names,
allows remote attackers to access arbitrary files via (1) "..%5c"
(encoded backslash) sequences or (2) filenames that match patterns in
the :NondisclosureName option.

Comment 3 Tomas Hoger 2008-03-07 14:29:30 UTC

Advisory from researcher that discovered the flaw:

http://marc.info/?l=bugtraq&m=120482138928670&w=4

Upstream SVN commit:

http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=15676

Fixed upstream in:
1.8.5-p115, 1.8.6-p114

Comment 4 Tomas Hoger 2008-03-07 15:38:41 UTC

This issue does not affect ruby packages as shipped in Red Hat Enterprise Linux
2.1 and 3, as those packages do not include WEBrick component.

Comment 5 Fedora Update System 2008-03-13 07:45:54 UTC

ruby-1.8.6.114-1.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2008-03-13 07:46:49 UTC

ruby-1.8.6.114-1.fc7 has been pushed to the Fedora 7 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 Red Hat Product Security 2009-01-09 09:41:51 UTC

This issue was addressed in:

Red Hat Enterprise Linux:
  http://rhn.redhat.com/errata/RHSA-2008-0897.html