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Category:   Application (Web Server/CGI)  >   Red Hat Network Proxy Server Vendors:   Red Hat
(Red Hat Issues Fix for Red Hat Network Proxy Server) Apache HTTPD scoreboard Protection Flaw Lets Local Users Terminate Arbitrary Processes
SecurityTracker Alert ID:  1020068
SecurityTracker URL:
CVE Reference:   CVE-2007-3304   (Links to External Site)
Date:  May 20 2008
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 5.0
Description:   A vulnerability was reported in Apache HTTPD. A local user can cause denial of service conditions. Red Hat Network Proxy Server is affected.

The server does not verify that a process is actually an Apache child process before sending signals to the process. A local user with the ability to run scripts can modify the scoreboard arrays to reference arbitrary process IDs and cause arbitrary processes to be terminated.

The vendor was notified on May 16, 2006.

PSNC Security Team discovered this vulnerability.

Impact:   A local user with privileges to run scripts on the target system can terminate arbitrary processes on the target system.
Solution:   Red Hat has released a fix for Red Hat Network Proxy Server, which is affected by this vulnerability.

The Red Hat advisory is available at:

Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  4

Message History:   This archive entry is a follow-up to the message listed below.
Jun 26 2007 Apache HTTPD scoreboard Protection Flaw Lets Local Users Terminate Arbitrary Processes

 Source Message Contents

Subject:  [RHSA-2008:0263-01] Low: Red Hat Network Proxy Server security

Hash: SHA1

                   Red Hat Security Advisory

Synopsis:          Low: Red Hat Network Proxy Server security update
Advisory ID:       RHSA-2008:0263-01
Product:           Red Hat Network Proxy Server
Advisory URL:
Issue date:        2008-05-20
CVE Names:         CVE-2006-1329 CVE-2006-5752 CVE-2007-1349 
                   CVE-2007-3304 CVE-2007-5000 CVE-2007-6388 

1. Summary:

Red Hat Network Proxy Server version 5.0.2 is now available. This update
includes fixes for a number of security issues in Red Hat Network Proxy
Server components.

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

2. Relevant releases/architectures:

Red Hat Network Proxy v 5.0 (RHEL v.4 AS) - i386

3. Description:

The Red Hat Network Proxy Server 5.0.2 release corrects several security
vulnerabilities in several shipped components. In a typical operating
environment, these components are not exposed to users of Proxy Server in a
vulnerable manner. These security updates will reduce risk in unique Proxy
Server environments.

Multiple flaws were fixed in the Apache HTTPD server. These flaws could
result in a cross-site scripting or denial-of-service attack.
(CVE-2007-6388, CVE-2007-5000, CVE-2007-3304, CVE-2006-5752)

A denial-of-service flaw was fixed in mod_perl. (CVE-2007-1349)

A denial-of-service flaw was fixed in the jabberd server. (CVE-2006-1329)

Users of Red Hat Network Proxy Server 5.0 are advised to upgrade to 5.0.2,
which resolves these issues.

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

5. Bugs fixed (

240423 - CVE-2007-1349 mod_perl PerlRun denial of service
245111 - CVE-2007-3304 httpd scoreboard lack of PID protection
245112 - CVE-2006-5752 httpd mod_status XSS
419931 - CVE-2007-5000 mod_imagemap XSS
427228 - CVE-2007-6388 apache mod_status cross-site scripting
429254 - CVE-2006-1329 jabberd SASL DoS

6. Package List:

Red Hat Network Proxy v 5.0 (RHEL v.4 AS):


These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from

7. References:

8. Contact:

The Red Hat security contact is <>.  More contact
details at

Copyright 2008 Red Hat, Inc.
Version: GnuPG v1.4.4 (GNU/Linux)


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