Users login

Create an account »

JOIN XATRIX

Users login

Home » Hacking News » Hewlett Packard SSRT3615: Apache HTTP Trace enabled by default

Hewlett Packard SSRT3615: Apache HTTP Trace enabled by default

by Nikola Strahija on September 7th, 2003 Certain client applications have cross domain vulnerabilities. These vulnerabilities can be exploited to use the HTTP TRACE method present in many web servers to return sensitive information such as cookies or authentication data. This exploit method can be blocked by disabling HTTP TRACE.


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

-----------------------------------------------------------------
Source: HEWLETT-PACKARD COMPANY
SECURITY BULLETIN: HPSBUX0309-279
Originally issued: 07 September 2003
SSRT3615 Apache web server HTTP TRACE enabled by default
-----------------------------------------------------------------

NOTICE: There are no restrictions for distribution of this
Bulletin provided that it remains complete and intact.

The information in the following Security Bulletin should be
acted upon as soon as possible. Hewlett-Packard Company will
not be liable for any consequences to any customer resulting
from customer's failure to fully implement instructions in this
Security Advisory as soon as possible.

-----------------------------------------------------------------
PROBLEM: The HTTP TRACE method returns the contents of client
HTTP requests in the entity-body of the TRACE response.
This behavior could be exploited by attackers to access
sensitive information.

IMPACT: Potential for access to sensitive information.

PLATFORM: Any HP system running the Apache Web Server.

SOLUTION: If site requirements allow, disable HTTP TRACE.

MANUAL ACTIONS: Yes - NonUpdate
If site requirements allow, disable HTTP TRACE.

-----------------------------------------------------------------
A. Background
Certain client applications have cross domain vulnerabilities.
These vulnerabilities can be exploited to use the HTTP TRACE
method present in many web servers to return sensitive
information such as cookies or authentication data. This
exploit method can be blocked by disabling HTTP TRACE.

It should be noted that disabling HTTP TRACE does not
eliminate the client side cross domain vulnerabilities. It
blocks one method of exploiting them. Also, the HTTP TRACE
method is not itself defective.

More details can be found here:



AFFECTED VERSIONS

Advisory Only

END AFFECTED VERSIONS

B. Recommended solution

If HTTP TRACE is not required by a site it should be disabled.

TRACE requests can be disabled with the following mod_rewrite
syntax in the Apache server's httpd.conf file:

RewriteEngine On
RewriteCond %{REQUEST_METHOD} ^TRACE
RewriteRule .* - [F]

C. To subscribe to automatically receive future NEW HP Security
Bulletins from the HP IT Resource Center via electronic
mail, do the following:

Use your browser to get to the HP IT Resource Center page
at:

http://itrc.hp.com

Use the 'Login' tab at the left side of the screen to login
using your ID and password. Use your existing login or the
"Register" button at the left to create a login, in order to
gain access to many areas of the ITRC. Remember to save the
User ID assigned to you, and your password.

In the left most frame select "Maintenance and Support".

Under the "Notifications" section (near the bottom of
the page), select "Support Information Digests".

To -subscribe- to future HP Security Bulletins or other
Technical Digests, click the check box (in the left column)
for the appropriate digest and then click the "Update
Subscriptions" button at the bottom of the page.

or

To -review- bulletins already released, select the link
(in the middle column) for the appropriate digest.

NOTE: Using your itrc account security bulletins can be
found here:
http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin


To -gain access- to the Security Patch Matrix, select
the link for "The Security Bulletins Archive". (near the
bottom of the page) Once in the archive the third link is
to the current Security Patch Matrix. Updated daily, this
matrix categorizes security patches by platform/OS release,
and by bulletin topic. Security Patch Check completely
automates the process of reviewing the patch matrix for
11.XX systems. Please note that installing the patches
listed in the Security Patch Matrix will completely
implement a security bulletin _only_ if the MANUAL ACTIONS
field specifies "No."

The Security Patch Check tool can verify that a security
bulletin has been implemented on HP-UX 11.XX systems providing
that the fix is completely implemented in a patch with no
manual actions required. The Security Patch Check tool cannot
verify fixes implemented via a product upgrade.

For information on the Security Patch Check tool, see:
http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/
displayProductInfo.pl?productNumber=B6834AA

The security patch matrix is also available via anonymous
ftp:

ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/

On the "Support Information Digest Main" page:
click on the "HP Security Bulletin Archive".

The PGP key used to sign this bulletin is available from
several PGP Public Key servers. The key identification
information is:

2D2A7D59
HP Security Response Team (Security Bulletin signing only)

Fingerprint =
6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59

If you have problems locating the key please write to
[email protected] Please note that this key is
for signing bulletins only and is not the key returned
by sending 'get key' to [email protected]


D. To report new security vulnerabilities, send email to

[email protected]

Please encrypt any exploit information using the
security-alert PGP key, available from your local key
server, or by sending a message with a -subject- (not body)
of 'get key' (no quotes) to [email protected]

-----------------------------------------------------------------

(c)Copyright 2003 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
in this document is subject to change without notice.
Hewlett-Packard Company and the names of HP products referenced
herein are trademarks and/or service marks of Hewlett-Packard
Company. Other product and company names mentioned herein may be
trademarks and/or service marks of their respective owners.

________________________________________________________________

-----BEGIN PGP SIGNATURE-----
Version: PGP Personal Security 7.0.3

iQA/AwUBP1txLeAfOvwtKn1ZEQKPxwCeK497fIV2ojNQoFfTCekmP3ULTTMAoMky
6tRoHPH7pSVYVb54ixdrw73/
=/A/K
-----END PGP SIGNATURE-----


Newsletter signup

Signup to our monthly newsletter and stay in touch with IT news!

Free E-books

We've got ebooks! But they're not online. :( Please give us a few days to bring downloads back.

Contact

Have something to say or just wanna drop us a line? Please keep this in mind: to spam, we reply with spam.

Contact us »