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Category:   Application (Web Server/CGI)  >   Squid Vendors:   Squid-cache.org
(Red Hat Issues Fix) Squid Range Header Processing Flaw Lets Remote Users Deny Service
SecurityTracker Alert ID:  1030798
SecurityTracker URL:  http://securitytracker.com/id/1030798
CVE Reference:   CVE-2014-3609   (Links to External Site)
Date:  Sep 3 2014
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.x prior to 3.3.13; 3.4.x prior to 3.4.7
Description:   A vulnerability was reported in Squid. A remote user can cause denial of service conditions.

A remote user can send a specially crafted Range header to cause denial of service conditions.

Matthew Daley reported this vulnerability.

Impact:   A remote user can cause denial of service conditions.
Solution:   Red Hat has issued a fix.

The Red Hat advisories are available at:

https://rhn.redhat.com/errata/RHSA-2014-1147.html
https://rhn.redhat.com/errata/RHSA-2014-1148.html

Vendor URL:  www.squid-cache.org/Advisories/SQUID-2014_2.txt (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6, 7

Message History:   This archive entry is a follow-up to the message listed below.
Aug 29 2014 Squid Range Header Processing Flaw Lets Remote Users Deny Service



 Source Message Contents

Subject:  [RHSA-2014:1147-01] Important: squid security update

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

Synopsis:          Important: squid security update
Advisory ID:       RHSA-2014:1147-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-1147.html
Issue date:        2014-09-03
CVE Names:         CVE-2014-3609 
=====================================================================

1. Summary:

Updated squid packages that fix one security issue are now available for
Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - 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 handled malformed HTTP Range headers.
A remote attacker able to send HTTP requests to the Squid proxy could use
this flaw to crash Squid. (CVE-2014-3609)

Red Hat would like to thank the Squid project for reporting this issue.
Upstream acknowledges Matthew Daley as the original reporter.

All Squid users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing this
update, the squid service will be restarted automatically.

4. Solution:

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

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/articles/11258

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

1134209 - CVE-2014-3609 squid: assertion failure in Range header processing (SQUID-2014:2)

6. Package List:

Red Hat Enterprise Linux Server (v. 7):

Source:
squid-3.3.8-12.el7_0.src.rpm

ppc64:
squid-3.3.8-12.el7_0.ppc64.rpm
squid-debuginfo-3.3.8-12.el7_0.ppc64.rpm

s390x:
squid-3.3.8-12.el7_0.s390x.rpm
squid-debuginfo-3.3.8-12.el7_0.s390x.rpm

x86_64:
squid-3.3.8-12.el7_0.x86_64.rpm
squid-debuginfo-3.3.8-12.el7_0.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64:
squid-debuginfo-3.3.8-12.el7_0.ppc64.rpm
squid-sysvinit-3.3.8-12.el7_0.ppc64.rpm

s390x:
squid-debuginfo-3.3.8-12.el7_0.s390x.rpm
squid-sysvinit-3.3.8-12.el7_0.s390x.rpm

x86_64:
squid-debuginfo-3.3.8-12.el7_0.x86_64.rpm
squid-sysvinit-3.3.8-12.el7_0.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
squid-3.3.8-12.el7_0.src.rpm

x86_64:
squid-3.3.8-12.el7_0.x86_64.rpm
squid-debuginfo-3.3.8-12.el7_0.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
squid-debuginfo-3.3.8-12.el7_0.x86_64.rpm
squid-sysvinit-3.3.8-12.el7_0.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://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2014-3609.html
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2014 Red Hat, Inc.
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