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Category:   Application (Web Server/CGI)  >   JBoss Vendors:   Red Hat
Red Hat JBoss Enterprise Web Server Protocol Flaw in SSL Renegotiation Lets Remote Users Conduct Man-in-the-Middle Attacks
SecurityTracker Alert ID:  1023411
SecurityTracker URL:  http://securitytracker.com/id/1023411
CVE Reference:   CVE-2009-3555   (Links to External Site)
Date:  Jan 7 2010
Impact:   Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.0
Description:   A vulnerability was reported in JBoss Enterprise Web Server. A remote user can conduct a man-in-the-middle attack on SSL session renegotiation.

A remote user with the ability to conduct a man-in-the-middle attack can exploit a flaw in the underlying SSL/TLS protocol to inject arbitrary plain text into the exchange between the client and the server, with the arbitrary data as a prefix to the session.

The vulnerability resides in the TLS 1.0 or later and SSLv3 protocols.

Marsh Ray of PhoneFactor and Martin Rex independently reported this vulnerability.

[Editor's note: The flaw resides in the protocol and not in the protocol implementation. Some vendors are implementing a temporary workaround that prohibits session renegotiation until the protocol itself can be modified. Several protocol implementations are affected, including OpenSSL, GnuTLS, Network Security Services, and Java Secure Socket Extension.]

Impact:   A remote user can with the ability to conduct a man-in-the-middle attack can inject arbitrary plain text data into the exchange, preceding the session data.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-0011.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2010-0011.html (Links to External Site)
Cause:   Authentication error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   None.


 Source Message Contents

Date:  Wed, 6 Jan 2010 11:29:50 -0500
Subject:  [RHSA-2010:0011-01] Moderate: httpd and httpd22 security update

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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: httpd and httpd22 security update
Advisory ID:       RHSA-2010:0011-01
Product:           JBoss Enterprise Web Server
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-0011.html
Issue date:        2010-01-06
CVE Names:         CVE-2009-3094 CVE-2009-3095 CVE-2009-3555 
=====================================================================

1. Summary:

Updated httpd and httpd22 packages that fix multiple security issues are
now available for JBoss Enterprise Web Server 1.0.0 for Red Hat Enterprise
Linux 4 and 5.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

JBoss Enterprise Web Server 1.0.0 for RHEL 4 AS - i386, x86_64
JBoss Enterprise Web Server 1.0.0 for RHEL 4 ES - i386, x86_64
JBoss Enterprise Web Server 1.0.0 for RHEL 5 Server - i386, x86_64

3. Description:

The Apache HTTP Server is a popular Web server.

A flaw was found in the way the TLS/SSL (Transport Layer Security/Secure
Sockets Layer) protocols handle session renegotiation. A man-in-the-middle
attacker could use this flaw to prefix arbitrary plain text to a client's
session (for example, an HTTPS connection to a website). This could force
the server to process an attacker's request as if authenticated using the
victim's credentials. This update partially mitigates this flaw for SSL
sessions to HTTP servers using mod_ssl by rejecting client-requested
renegotiation. (CVE-2009-3555)

Note: This update does not fully resolve the issue for HTTPS servers. An
attack is still possible in configurations that require a server-initiated
renegotiation. Refer to the following Knowledgebase article for further
information: http://kbase.redhat.com/faq/docs/DOC-20491

A NULL pointer dereference flaw was found in the Apache mod_proxy_ftp
module. A malicious FTP server to which requests are being proxied could
use this flaw to crash an httpd child process via a malformed reply to the
EPSV or PASV commands, resulting in a limited denial of service.
(CVE-2009-3094)

A second flaw was found in the Apache mod_proxy_ftp module. In a reverse
proxy configuration, a remote attacker could use this flaw to bypass
intended access restrictions by creating a carefully-crafted HTTP
Authorization header, allowing the attacker to send arbitrary commands to
the FTP server. (CVE-2009-3095)

All users of JBoss Enterprise Web Server 1.0.0 should upgrade to these
updated packages, which contain backported patches to correct these issues.
After installing the updated packages, Red Hat Enterprise Linux 4 users
must restart the httpd22 service, and Red Hat Enterprise Linux 5 users must
restart the httpd service, for the update to take effect.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network.  Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

521619 - CVE-2009-3094 httpd: NULL pointer defer in mod_proxy_ftp caused by crafted EPSV and PASV reply
522209 - CVE-2009-3095 httpd: mod_proxy_ftp FTP command injection via Authorization HTTP header
533125 - CVE-2009-3555 TLS: MITM attacks via session renegotiation

6. Package List:

JBoss Enterprise Web Server 1.0.0 for RHEL 4 AS:

Source:
httpd22-2.2.10-25.1.ep5.el4.src.rpm

i386:
httpd22-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-devel-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-util-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-util-devel-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-debuginfo-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-devel-2.2.10-25.1.ep5.el4.i386.rpm
mod_ssl22-2.2.10-25.1.ep5.el4.i386.rpm

x86_64:
httpd22-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-devel-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-util-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-util-devel-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-debuginfo-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-devel-2.2.10-25.1.ep5.el4.x86_64.rpm
mod_ssl22-2.2.10-25.1.ep5.el4.x86_64.rpm

JBoss Enterprise Web Server 1.0.0 for RHEL 4 ES:

Source:
httpd22-2.2.10-25.1.ep5.el4.src.rpm

i386:
httpd22-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-devel-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-util-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-apr-util-devel-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-debuginfo-2.2.10-25.1.ep5.el4.i386.rpm
httpd22-devel-2.2.10-25.1.ep5.el4.i386.rpm
mod_ssl22-2.2.10-25.1.ep5.el4.i386.rpm

x86_64:
httpd22-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-devel-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-util-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-apr-util-devel-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-debuginfo-2.2.10-25.1.ep5.el4.x86_64.rpm
httpd22-devel-2.2.10-25.1.ep5.el4.x86_64.rpm
mod_ssl22-2.2.10-25.1.ep5.el4.x86_64.rpm

JBoss Enterprise Web Server 1.0.0 for RHEL 5 Server:

Source:
httpd-2.2.10-11.ep5.el5.src.rpm

i386:
httpd-2.2.10-11.ep5.el5.i386.rpm
httpd-debuginfo-2.2.10-11.ep5.el5.i386.rpm
httpd-devel-2.2.10-11.ep5.el5.i386.rpm
httpd-manual-2.2.10-11.ep5.el5.i386.rpm
mod_ssl-2.2.10-11.ep5.el5.i386.rpm

x86_64:
httpd-2.2.10-11.ep5.el5.x86_64.rpm
httpd-debuginfo-2.2.10-11.ep5.el5.x86_64.rpm
httpd-devel-2.2.10-11.ep5.el5.x86_64.rpm
httpd-manual-2.2.10-11.ep5.el5.x86_64.rpm
mod_ssl-2.2.10-11.ep5.el5.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://www.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2009-3094.html
https://www.redhat.com/security/data/cve/CVE-2009-3095.html
https://www.redhat.com/security/data/cve/CVE-2009-3555.html
http://www.redhat.com/security/updates/classification/#moderate
http://kbase.redhat.com/faq/docs/DOC-20491

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2010 Red Hat, Inc.
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