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Category:   Application (Web Server/CGI)  >   Squid Vendors:   Squid-cache.org
(Red Hat Issues Fix) Squid Buffer Overflow in DNS Lookup Component to Cause the Target Service to Crash
SecurityTracker Alert ID:  1030799
SecurityTracker URL:  http://securitytracker.com/id/1030799
CVE Reference:   CVE-2013-4115   (Links to External Site)
Date:  Sep 3 2014
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.2.x, 3.3.x
Description:   A vulnerability was reported in Squid. A remote user can cause denial of service conditions.

A remote user can send specially crafted HTTP requests to trigger a buffer overflow and cause the target Squid service to crash.

Nathan Hoad, Netbox Blue Pty Ltd, reported this vulnerability.

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

The Red Hat advisory is available at:

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

Vendor URL:  www.squid-cache.org/Advisories/SQUID-2013_2.txt (Links to External Site)
Cause:   Boundary error, Input validation error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6

Message History:   This archive entry is a follow-up to the message listed below.
Aug 15 2013 Squid Buffer Overflow in DNS Lookup Component to Cause the Target Service to Crash



 Source Message Contents

Subject:  [RHSA-2014:1148-01] Important: squid security update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: squid security update
Advisory ID:       RHSA-2014:1148-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2014-1148.html
Issue date:        2014-09-03
CVE Names:         CVE-2013-4115 CVE-2014-3609 
=====================================================================

1. Summary:

An updated squid package that fixes two security issues is now available
for Red Hat Enterprise Linux 5 and 6.

Red Hat Product Security has rated this update as having Important security
impact. Common Vulnerability Scoring System (CVSS) base scores, which give
detailed severity ratings, are available for each vulnerability from the
CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, 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)

A buffer overflow flaw was found in Squid's DNS lookup module. A remote
attacker able to send HTTP requests to the Squid proxy could use this flaw
to crash Squid. (CVE-2013-4115)

Red Hat would like to thank the Squid project for reporting the
CVE-2014-3609 issue. Upstream acknowledges Matthew Daley as the original
reporter.

All Squid users are advised to upgrade to this updated package, which
contains backported patches to correct these issues. 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/):

983653 - CVE-2013-4115 squid: buffer overflow when processing overly long DNS names (SQUID-2013:2)
1134209 - CVE-2014-3609 squid: assertion failure in Range header processing (SQUID-2014:2)

6. Package List:

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

Source:
squid-2.6.STABLE21-7.el5_10.src.rpm

i386:
squid-2.6.STABLE21-7.el5_10.i386.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.i386.rpm

x86_64:
squid-2.6.STABLE21-7.el5_10.x86_64.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
squid-2.6.STABLE21-7.el5_10.src.rpm

i386:
squid-2.6.STABLE21-7.el5_10.i386.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.i386.rpm

ia64:
squid-2.6.STABLE21-7.el5_10.ia64.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.ia64.rpm

ppc:
squid-2.6.STABLE21-7.el5_10.ppc.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.ppc.rpm

s390x:
squid-2.6.STABLE21-7.el5_10.s390x.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.s390x.rpm

x86_64:
squid-2.6.STABLE21-7.el5_10.x86_64.rpm
squid-debuginfo-2.6.STABLE21-7.el5_10.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
squid-3.1.10-22.el6_5.src.rpm

i386:
squid-3.1.10-22.el6_5.i686.rpm
squid-debuginfo-3.1.10-22.el6_5.i686.rpm

ppc64:
squid-3.1.10-22.el6_5.ppc64.rpm
squid-debuginfo-3.1.10-22.el6_5.ppc64.rpm

s390x:
squid-3.1.10-22.el6_5.s390x.rpm
squid-debuginfo-3.1.10-22.el6_5.s390x.rpm

x86_64:
squid-3.1.10-22.el6_5.x86_64.rpm
squid-debuginfo-3.1.10-22.el6_5.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
squid-3.1.10-22.el6_5.src.rpm

i386:
squid-3.1.10-22.el6_5.i686.rpm
squid-debuginfo-3.1.10-22.el6_5.i686.rpm

x86_64:
squid-3.1.10-22.el6_5.x86_64.rpm
squid-debuginfo-3.1.10-22.el6_5.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-2013-4115.html
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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