Bug 237080 (CVE-2007-0450)

Summary: CVE-2007-0450 tomcat directory traversal
Product: [Other] Security Response Reporter: Mark J. Cox <mjc>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: medium    
Version: unspecifiedCC: djorm
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: All   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2012-02-23 07:22:30 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 237086, 237088, 237089, 237090, 237109, 238402, 238574, 240208, 390331, 390341, 390351, 390361, 414311, 430730, 430731, 449337, 470236, 470237    
Bug Blocks: 444136    

Description Mark J. Cox 2007-04-19 11:56:53 UTC 
From http://tomcat.apache.org/security-5.html

Fixed in Apache Tomcat 5.5.22, 5.0.HEAD

Directory traversal CVE-2007-0450

Tomcat permits '\', '%2F' and '%5C' as path delimiters. When Tomcat is used
behind a proxy (including, but not limited to, Apache HTTP server with mod_proxy
and mod_jk) configured to only proxy some contexts, a HTTP request containing
strings like "/\../" may allow attackers to work around the context restriction
of the proxy, and access the non-proxied contexts.

The following Java system properties have been added to Tomcat to provide
additional control of the handling of path delimiters in URLs (both options
default to false):

      * org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH: true|false
      * org.apache.catalina.connector.CoyoteAdapter.ALLOW_BACKSLASH: true|false

Due to the impossibility to guarantee that all URLs are handled by Tomcat as
they are in proxy servers, Tomcat should always be secured as if no proxy
restricting context access was used.

Affects: 5.5.0-5.5.21, 5.0.0-5.0.30
Comment 4 Mark J. Cox 2007-04-23 10:39:57 UTC 
Advisory text: "Tomcat permitted various characters as path delimiters.  If
Tomcat was used behind a certain proxies and configured to only proxy some
contexts, an attacker could construct a HTTP request to work around the context
restriction and potentially access non-proxied content.  (CVE-2007-0450)"
Comment 5 Jean-frederic Clere 2007-05-02 06:36:33 UTC 
If the customer as an unsecure access to /jmx-console or /web-console running on
localhost and use mod_jk/mod_proxy an attack request could get access to them.
Comment 11 errata-xmlrpc 2010-08-04 21:32:29 UTC 
This issue has been addressed in following products:

  Red Hat Certificate System 7.3

Via RHSA-2010:0602 https://rhn.redhat.com/errata/RHSA-2010-0602.html