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Category:   Application (Web Server/CGI)  >   Squid Vendors:   Squid-cache.org
(Red Hat Issues Fix) Squid Cache Update Reply Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1019809
SecurityTracker URL:  http://securitytracker.com/id/1019809
CVE Reference:   CVE-2007-6239, CVE-2008-1612   (Links to External Site)
Date:  Apr 9 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.6.STABLE17
Description:   A vulnerability was reported in Squid. A remote user can cause denial of service conditions.

A remote user that is trusted to use the proxy service can trigger a flaw in the processing of cache update replies to cause the target service to crash.

The Wikimedia Foundation reported this vulnerability.

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

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2008-0214.html

Vendor URL:  www.squid-cache.org/Advisories/SQUID-2007_2.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  2.1, 3, 4, 5

Message History:   This archive entry is a follow-up to the message listed below.
Dec 4 2007 Squid Cache Update Reply Processing Bug Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2008:0214-01] Moderate: squid security update


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

Synopsis:          Moderate: squid security update
Advisory ID:       RHSA-2008:0214-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2008-0214.html
Issue date:        2008-04-08
CVE Names:         CVE-2008-1612 
=====================================================================

1. Summary:

Updated squid packages that fix a security issue are now available for Red
Hat Enterprise Linux 2.1, 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 (Advanced Server) version 2.1  - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
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
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

3. Description:

Squid is a high-performance proxy caching server for Web clients,
supporting FTP, gopher, and HTTP data objects.

A flaw was found in the way squid manipulated HTTP headers for cached
objects stored in system memory. An attacker could use this flaw to cause a
squid child process to exit. This interrupted existing connections and made
proxy services unavailable. Note: the parent squid process started a new
child process, so this attack only resulted in a temporary denial of
service. (CVE-2008-1612)

Users of squid are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue.

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/):

439801 - CVE-2008-1612 squid: regression in SQUID-2007:2 / CVE-2007-6239

6. Package List:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 :

Source:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/squid-2.4.STABLE7-1.21as.12.src.rpm

i386:
squid-2.4.STABLE7-1.21as.12.i386.rpm

ia64:
squid-2.4.STABLE7-1.21as.12.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/squid-2.4.STABLE7-1.21as.12.src.rpm

ia64:
squid-2.4.STABLE7-1.21as.12.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

Source:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/squid-2.4.STABLE7-1.21as.12.src.rpm

i386:
squid-2.4.STABLE7-1.21as.12.i386.rpm

Red Hat Enterprise Linux AS version 3:

Source:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squid-2.5.STABLE3-9.3E.src.rpm

i386:
squid-2.5.STABLE3-9.3E.i386.rpm
squid-debuginfo-2.5.STABLE3-9.3E.i386.rpm

ia64:
squid-2.5.STABLE3-9.3E.ia64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.ia64.rpm

ppc:
squid-2.5.STABLE3-9.3E.ppc.rpm
squid-debuginfo-2.5.STABLE3-9.3E.ppc.rpm

s390:
squid-2.5.STABLE3-9.3E.s390.rpm
squid-debuginfo-2.5.STABLE3-9.3E.s390.rpm

s390x:
squid-2.5.STABLE3-9.3E.s390x.rpm
squid-debuginfo-2.5.STABLE3-9.3E.s390x.rpm

x86_64:
squid-2.5.STABLE3-9.3E.x86_64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.x86_64.rpm

Red Hat Desktop version 3:

Source:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squid-2.5.STABLE3-9.3E.src.rpm

i386:
squid-2.5.STABLE3-9.3E.i386.rpm
squid-debuginfo-2.5.STABLE3-9.3E.i386.rpm

x86_64:
squid-2.5.STABLE3-9.3E.x86_64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

Source:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squid-2.5.STABLE3-9.3E.src.rpm

i386:
squid-2.5.STABLE3-9.3E.i386.rpm
squid-debuginfo-2.5.STABLE3-9.3E.i386.rpm

ia64:
squid-2.5.STABLE3-9.3E.ia64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.ia64.rpm

x86_64:
squid-2.5.STABLE3-9.3E.x86_64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

Source:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squid-2.5.STABLE3-9.3E.src.rpm

i386:
squid-2.5.STABLE3-9.3E.i386.rpm
squid-debuginfo-2.5.STABLE3-9.3E.i386.rpm

ia64:
squid-2.5.STABLE3-9.3E.ia64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.ia64.rpm

x86_64:
squid-2.5.STABLE3-9.3E.x86_64.rpm
squid-debuginfo-2.5.STABLE3-9.3E.x86_64.rpm

Red Hat Enterprise Linux AS version 4:

Source:
ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/squid-2.5.STABLE14-1.4E.el4_6.2.src.rpm

i386:
squid-2.5.STABLE14-1.4E.el4_6.2.i386.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.i386.rpm

ia64:
squid-2.5.STABLE14-1.4E.el4_6.2.ia64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.ia64.rpm

ppc:
squid-2.5.STABLE14-1.4E.el4_6.2.ppc.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.ppc.rpm

s390:
squid-2.5.STABLE14-1.4E.el4_6.2.s390.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.s390.rpm

s390x:
squid-2.5.STABLE14-1.4E.el4_6.2.s390x.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.s390x.rpm

x86_64:
squid-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source:
ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/squid-2.5.STABLE14-1.4E.el4_6.2.src.rpm

i386:
squid-2.5.STABLE14-1.4E.el4_6.2.i386.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.i386.rpm

x86_64:
squid-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source:
ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/squid-2.5.STABLE14-1.4E.el4_6.2.src.rpm

i386:
squid-2.5.STABLE14-1.4E.el4_6.2.i386.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.i386.rpm

ia64:
squid-2.5.STABLE14-1.4E.el4_6.2.ia64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.ia64.rpm

x86_64:
squid-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source:
ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/squid-2.5.STABLE14-1.4E.el4_6.2.src.rpm

i386:
squid-2.5.STABLE14-1.4E.el4_6.2.i386.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.i386.rpm

ia64:
squid-2.5.STABLE14-1.4E.el4_6.2.ia64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.ia64.rpm

x86_64:
squid-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm
squid-debuginfo-2.5.STABLE14-1.4E.el4_6.2.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/squid-2.6.STABLE6-5.el5_1.3.src.rpm

i386:
squid-2.6.STABLE6-5.el5_1.3.i386.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.i386.rpm

x86_64:
squid-2.6.STABLE6-5.el5_1.3.x86_64.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/squid-2.6.STABLE6-5.el5_1.3.src.rpm

i386:
squid-2.6.STABLE6-5.el5_1.3.i386.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.i386.rpm

ia64:
squid-2.6.STABLE6-5.el5_1.3.ia64.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.ia64.rpm

ppc:
squid-2.6.STABLE6-5.el5_1.3.ppc.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.ppc.rpm

s390x:
squid-2.6.STABLE6-5.el5_1.3.s390x.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.s390x.rpm

x86_64:
squid-2.6.STABLE6-5.el5_1.3.x86_64.rpm
squid-debuginfo-2.6.STABLE6-5.el5_1.3.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-2008-1612
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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