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Category:   Application (Web Server/CGI)  >   Apache mod_proxy Vendors:   Apache Software Foundation
(Red Hat Issues Fix) Apache mod_proxy Interim Response Process Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1021166
SecurityTracker URL:  http://securitytracker.com/id/1021166
CVE Reference:   CVE-2008-2364   (Links to External Site)
Date:  Nov 11 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.0.63, 2.2.8
Description:   A vulnerability was reported in Apache mod_proxy. A remote user can cause denial of service conditions.

A remote server can send a large number of interim responses to cause the target proxy service to consume excessive memory.

The vulnerability resides in 'modules/proxy/mod_proxy_http.c'.

Ryujiro Shibuya reported this vulnerability.

Impact:   A remote user can cause the target service to consume excessive memory.
Solution:   Red Hat has released a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0967.html

Vendor URL:  httpd.apache.org/ (Links to External Site)
Cause:   Resource error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  3, 4, 5

Message History:   This archive entry is a follow-up to the message listed below.
Jun 12 2008 Apache mod_proxy Interim Response Process Bug Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2008:0967-01] Moderate: httpd security and bug fix update


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Hash: SHA1

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

Synopsis:          Moderate: httpd security and bug fix update
Advisory ID:       RHSA-2008:0967-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0967.html
Issue date:        2008-11-11
CVE Names:         CVE-2008-2364 CVE-2008-2939 
=====================================================================

1. Summary:

Updated httpd packages that resolve several security issues and fix a bug
are now available for Red Hat Enterprise Linux 3, 4 and 5.

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

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Desktop version 3 - i386, x86_64
Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64
Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64
Red Hat Enterprise Linux Desktop version 4 - i386, x86_64
Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

The Apache HTTP Server is a popular Web server.

A flaw was found in the mod_proxy Apache module. An attacker in control of
a Web server to which requests were being proxied could have caused a
limited denial of service due to CPU consumption and stack exhaustion.
(CVE-2008-2364)

A flaw was found in the mod_proxy_ftp Apache module. If Apache was
configured to support FTP-over-HTTP proxying, a remote attacker could have
performed a cross-site scripting attack. (CVE-2008-2939)

In addition, these updated packages fix a bug found in the handling of the
"ProxyRemoteMatch" directive in the Red Hat Enterprise Linux 4 httpd
packages. This bug is not present in the Red Hat Enterprise Linux 3 or Red
Hat Enterprise Linux 5 packages.

Users of httpd should upgrade to these updated packages, which contain
backported patches to correct 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
http://kbase.redhat.com/faq/FAQ_58_10188

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

451615 - CVE-2008-2364 httpd: mod_proxy_http DoS via excessive interim responses from the origin server
458250 - CVE-2008-2939 httpd: mod_proxy_ftp globbing XSS
464492 - mod_proxy: ProxyRemoteMatch uses remote proxy if regex does *not* match

6. Package List:

Red Hat Enterprise Linux AS version 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/httpd-2.0.46-71.ent.src.rpm

i386:
httpd-2.0.46-71.ent.i386.rpm
httpd-debuginfo-2.0.46-71.ent.i386.rpm
httpd-devel-2.0.46-71.ent.i386.rpm
mod_ssl-2.0.46-71.ent.i386.rpm

ia64:
httpd-2.0.46-71.ent.ia64.rpm
httpd-debuginfo-2.0.46-71.ent.ia64.rpm
httpd-devel-2.0.46-71.ent.ia64.rpm
mod_ssl-2.0.46-71.ent.ia64.rpm

ppc:
httpd-2.0.46-71.ent.ppc.rpm
httpd-debuginfo-2.0.46-71.ent.ppc.rpm
httpd-devel-2.0.46-71.ent.ppc.rpm
mod_ssl-2.0.46-71.ent.ppc.rpm

s390:
httpd-2.0.46-71.ent.s390.rpm
httpd-debuginfo-2.0.46-71.ent.s390.rpm
httpd-devel-2.0.46-71.ent.s390.rpm
mod_ssl-2.0.46-71.ent.s390.rpm

s390x:
httpd-2.0.46-71.ent.s390x.rpm
httpd-debuginfo-2.0.46-71.ent.s390x.rpm
httpd-devel-2.0.46-71.ent.s390x.rpm
mod_ssl-2.0.46-71.ent.s390x.rpm

x86_64:
httpd-2.0.46-71.ent.x86_64.rpm
httpd-debuginfo-2.0.46-71.ent.x86_64.rpm
httpd-devel-2.0.46-71.ent.x86_64.rpm
mod_ssl-2.0.46-71.ent.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/httpd-2.0.46-71.ent.src.rpm

i386:
httpd-2.0.46-71.ent.i386.rpm
httpd-debuginfo-2.0.46-71.ent.i386.rpm
httpd-devel-2.0.46-71.ent.i386.rpm
mod_ssl-2.0.46-71.ent.i386.rpm

x86_64:
httpd-2.0.46-71.ent.x86_64.rpm
httpd-debuginfo-2.0.46-71.ent.x86_64.rpm
httpd-devel-2.0.46-71.ent.x86_64.rpm
mod_ssl-2.0.46-71.ent.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/httpd-2.0.46-71.ent.src.rpm

i386:
httpd-2.0.46-71.ent.i386.rpm
httpd-debuginfo-2.0.46-71.ent.i386.rpm
httpd-devel-2.0.46-71.ent.i386.rpm
mod_ssl-2.0.46-71.ent.i386.rpm

ia64:
httpd-2.0.46-71.ent.ia64.rpm
httpd-debuginfo-2.0.46-71.ent.ia64.rpm
httpd-devel-2.0.46-71.ent.ia64.rpm
mod_ssl-2.0.46-71.ent.ia64.rpm

x86_64:
httpd-2.0.46-71.ent.x86_64.rpm
httpd-debuginfo-2.0.46-71.ent.x86_64.rpm
httpd-devel-2.0.46-71.ent.x86_64.rpm
mod_ssl-2.0.46-71.ent.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/httpd-2.0.46-71.ent.src.rpm

i386:
httpd-2.0.46-71.ent.i386.rpm
httpd-debuginfo-2.0.46-71.ent.i386.rpm
httpd-devel-2.0.46-71.ent.i386.rpm
mod_ssl-2.0.46-71.ent.i386.rpm

ia64:
httpd-2.0.46-71.ent.ia64.rpm
httpd-debuginfo-2.0.46-71.ent.ia64.rpm
httpd-devel-2.0.46-71.ent.ia64.rpm
mod_ssl-2.0.46-71.ent.ia64.rpm

x86_64:
httpd-2.0.46-71.ent.x86_64.rpm
httpd-debuginfo-2.0.46-71.ent.x86_64.rpm
httpd-devel-2.0.46-71.ent.x86_64.rpm
mod_ssl-2.0.46-71.ent.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/httpd-2.0.52-41.ent.2.src.rpm

i386:
httpd-2.0.52-41.ent.2.i386.rpm
httpd-debuginfo-2.0.52-41.ent.2.i386.rpm
httpd-devel-2.0.52-41.ent.2.i386.rpm
httpd-manual-2.0.52-41.ent.2.i386.rpm
httpd-suexec-2.0.52-41.ent.2.i386.rpm
mod_ssl-2.0.52-41.ent.2.i386.rpm

ia64:
httpd-2.0.52-41.ent.2.ia64.rpm
httpd-debuginfo-2.0.52-41.ent.2.ia64.rpm
httpd-devel-2.0.52-41.ent.2.ia64.rpm
httpd-manual-2.0.52-41.ent.2.ia64.rpm
httpd-suexec-2.0.52-41.ent.2.ia64.rpm
mod_ssl-2.0.52-41.ent.2.ia64.rpm

ppc:
httpd-2.0.52-41.ent.2.ppc.rpm
httpd-debuginfo-2.0.52-41.ent.2.ppc.rpm
httpd-devel-2.0.52-41.ent.2.ppc.rpm
httpd-manual-2.0.52-41.ent.2.ppc.rpm
httpd-suexec-2.0.52-41.ent.2.ppc.rpm
mod_ssl-2.0.52-41.ent.2.ppc.rpm

s390:
httpd-2.0.52-41.ent.2.s390.rpm
httpd-debuginfo-2.0.52-41.ent.2.s390.rpm
httpd-devel-2.0.52-41.ent.2.s390.rpm
httpd-manual-2.0.52-41.ent.2.s390.rpm
httpd-suexec-2.0.52-41.ent.2.s390.rpm
mod_ssl-2.0.52-41.ent.2.s390.rpm

s390x:
httpd-2.0.52-41.ent.2.s390x.rpm
httpd-debuginfo-2.0.52-41.ent.2.s390x.rpm
httpd-devel-2.0.52-41.ent.2.s390x.rpm
httpd-manual-2.0.52-41.ent.2.s390x.rpm
httpd-suexec-2.0.52-41.ent.2.s390x.rpm
mod_ssl-2.0.52-41.ent.2.s390x.rpm

x86_64:
httpd-2.0.52-41.ent.2.x86_64.rpm
httpd-debuginfo-2.0.52-41.ent.2.x86_64.rpm
httpd-devel-2.0.52-41.ent.2.x86_64.rpm
httpd-manual-2.0.52-41.ent.2.x86_64.rpm
httpd-suexec-2.0.52-41.ent.2.x86_64.rpm
mod_ssl-2.0.52-41.ent.2.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/httpd-2.0.52-41.ent.2.src.rpm

i386:
httpd-2.0.52-41.ent.2.i386.rpm
httpd-debuginfo-2.0.52-41.ent.2.i386.rpm
httpd-devel-2.0.52-41.ent.2.i386.rpm
httpd-manual-2.0.52-41.ent.2.i386.rpm
httpd-suexec-2.0.52-41.ent.2.i386.rpm
mod_ssl-2.0.52-41.ent.2.i386.rpm

x86_64:
httpd-2.0.52-41.ent.2.x86_64.rpm
httpd-debuginfo-2.0.52-41.ent.2.x86_64.rpm
httpd-devel-2.0.52-41.ent.2.x86_64.rpm
httpd-manual-2.0.52-41.ent.2.x86_64.rpm
httpd-suexec-2.0.52-41.ent.2.x86_64.rpm
mod_ssl-2.0.52-41.ent.2.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/httpd-2.0.52-41.ent.2.src.rpm

i386:
httpd-2.0.52-41.ent.2.i386.rpm
httpd-debuginfo-2.0.52-41.ent.2.i386.rpm
httpd-devel-2.0.52-41.ent.2.i386.rpm
httpd-manual-2.0.52-41.ent.2.i386.rpm
httpd-suexec-2.0.52-41.ent.2.i386.rpm
mod_ssl-2.0.52-41.ent.2.i386.rpm

ia64:
httpd-2.0.52-41.ent.2.ia64.rpm
httpd-debuginfo-2.0.52-41.ent.2.ia64.rpm
httpd-devel-2.0.52-41.ent.2.ia64.rpm
httpd-manual-2.0.52-41.ent.2.ia64.rpm
httpd-suexec-2.0.52-41.ent.2.ia64.rpm
mod_ssl-2.0.52-41.ent.2.ia64.rpm

x86_64:
httpd-2.0.52-41.ent.2.x86_64.rpm
httpd-debuginfo-2.0.52-41.ent.2.x86_64.rpm
httpd-devel-2.0.52-41.ent.2.x86_64.rpm
httpd-manual-2.0.52-41.ent.2.x86_64.rpm
httpd-suexec-2.0.52-41.ent.2.x86_64.rpm
mod_ssl-2.0.52-41.ent.2.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/httpd-2.0.52-41.ent.2.src.rpm

i386:
httpd-2.0.52-41.ent.2.i386.rpm
httpd-debuginfo-2.0.52-41.ent.2.i386.rpm
httpd-devel-2.0.52-41.ent.2.i386.rpm
httpd-manual-2.0.52-41.ent.2.i386.rpm
httpd-suexec-2.0.52-41.ent.2.i386.rpm
mod_ssl-2.0.52-41.ent.2.i386.rpm

ia64:
httpd-2.0.52-41.ent.2.ia64.rpm
httpd-debuginfo-2.0.52-41.ent.2.ia64.rpm
httpd-devel-2.0.52-41.ent.2.ia64.rpm
httpd-manual-2.0.52-41.ent.2.ia64.rpm
httpd-suexec-2.0.52-41.ent.2.ia64.rpm
mod_ssl-2.0.52-41.ent.2.ia64.rpm

x86_64:
httpd-2.0.52-41.ent.2.x86_64.rpm
httpd-debuginfo-2.0.52-41.ent.2.x86_64.rpm
httpd-devel-2.0.52-41.ent.2.x86_64.rpm
httpd-manual-2.0.52-41.ent.2.x86_64.rpm
httpd-suexec-2.0.52-41.ent.2.x86_64.rpm
mod_ssl-2.0.52-41.ent.2.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/httpd-2.2.3-11.el5_2.4.src.rpm

i386:
httpd-2.2.3-11.el5_2.4.i386.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.i386.rpm
mod_ssl-2.2.3-11.el5_2.4.i386.rpm

x86_64:
httpd-2.2.3-11.el5_2.4.x86_64.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.x86_64.rpm
mod_ssl-2.2.3-11.el5_2.4.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/httpd-2.2.3-11.el5_2.4.src.rpm

i386:
httpd-debuginfo-2.2.3-11.el5_2.4.i386.rpm
httpd-devel-2.2.3-11.el5_2.4.i386.rpm
httpd-manual-2.2.3-11.el5_2.4.i386.rpm

x86_64:
httpd-debuginfo-2.2.3-11.el5_2.4.i386.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.x86_64.rpm
httpd-devel-2.2.3-11.el5_2.4.i386.rpm
httpd-devel-2.2.3-11.el5_2.4.x86_64.rpm
httpd-manual-2.2.3-11.el5_2.4.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/httpd-2.2.3-11.el5_2.4.src.rpm

i386:
httpd-2.2.3-11.el5_2.4.i386.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.i386.rpm
httpd-devel-2.2.3-11.el5_2.4.i386.rpm
httpd-manual-2.2.3-11.el5_2.4.i386.rpm
mod_ssl-2.2.3-11.el5_2.4.i386.rpm

ia64:
httpd-2.2.3-11.el5_2.4.ia64.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.ia64.rpm
httpd-devel-2.2.3-11.el5_2.4.ia64.rpm
httpd-manual-2.2.3-11.el5_2.4.ia64.rpm
mod_ssl-2.2.3-11.el5_2.4.ia64.rpm

ppc:
httpd-2.2.3-11.el5_2.4.ppc.rpm
httpd-2.2.3-11.el5_2.4.ppc64.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.ppc.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.ppc64.rpm
httpd-devel-2.2.3-11.el5_2.4.ppc.rpm
httpd-devel-2.2.3-11.el5_2.4.ppc64.rpm
httpd-manual-2.2.3-11.el5_2.4.ppc.rpm
mod_ssl-2.2.3-11.el5_2.4.ppc.rpm

s390x:
httpd-2.2.3-11.el5_2.4.s390x.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.s390.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.s390x.rpm
httpd-devel-2.2.3-11.el5_2.4.s390.rpm
httpd-devel-2.2.3-11.el5_2.4.s390x.rpm
httpd-manual-2.2.3-11.el5_2.4.s390x.rpm
mod_ssl-2.2.3-11.el5_2.4.s390x.rpm

x86_64:
httpd-2.2.3-11.el5_2.4.x86_64.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.i386.rpm
httpd-debuginfo-2.2.3-11.el5_2.4.x86_64.rpm
httpd-devel-2.2.3-11.el5_2.4.i386.rpm
httpd-devel-2.2.3-11.el5_2.4.x86_64.rpm
httpd-manual-2.2.3-11.el5_2.4.x86_64.rpm
mod_ssl-2.2.3-11.el5_2.4.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:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2364
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2939
http://www.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2008 Red Hat, Inc.
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