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                   Red Hat Security Advisory

Synopsis:          Moderate: squid security update
Advisory ID:       RHSA-2005:173-01
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2005-173.html
Issue date:        2005-03-03
Updated on:        2005-03-03
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2005-0446
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1. Summary:

Updated squid packages that fix a denial of service issue are now available.

This update has been rated as having important 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

3. Problem description:

Squid is a full-featured Web proxy cache.  
  
A bug was found in the way Squid handles FQDN lookups.  It was possible  
to crash the Squid server by sending a carefully crafted DNS response to  
an FQDN lookup.  The Common Vulnerabilities and Exposures project  
(cve.mitre.org) has assigned the name CAN-2005-0446 to this issue.  
  
Users of squid should upgrade to this updated package, which contains a  
backported patch, and is not vulnerable to this issue.

4. Solution:

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.  Use Red Hat
Network to download and update your packages.  To launch the Red Hat
Update Agent, use the following command:

    up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

    http://www.redhat.com/docs/manuals/enterprise/

5. Bug IDs fixed (http://bugzilla.redhat.com/):

148882 - CAN-2005-0446 Squid DoS from bad DNS response

6. RPMs required:

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

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/squid-2.4.STABLE7-1.21as.5.src.rpm
63b4267b6fb3c1345cb9dee4a979eee1  squid-2.4.STABLE7-1.21as.5.src.rpm

i386:
81505707ca33f4870a62382b88745bbc  squid-2.4.STABLE7-1.21as.5.i386.rpm

ia64:
c3a025c8b1847017da5e05d039e3bcc0  squid-2.4.STABLE7-1.21as.5.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/squid-2.4.STABLE7-1.21as.5.src.rpm
63b4267b6fb3c1345cb9dee4a979eee1  squid-2.4.STABLE7-1.21as.5.src.rpm

ia64:
c3a025c8b1847017da5e05d039e3bcc0  squid-2.4.STABLE7-1.21as.5.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/squid-2.4.STABLE7-1.21as.5.src.rpm
63b4267b6fb3c1345cb9dee4a979eee1  squid-2.4.STABLE7-1.21as.5.src.rpm

i386:
81505707ca33f4870a62382b88745bbc  squid-2.4.STABLE7-1.21as.5.i386.rpm

Red Hat Enterprise Linux AS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.8.src.rpm
ee14ff8dd48ea6e08c97dd4c2167550a  squid-2.5.STABLE3-6.3E.8.src.rpm

i386:
25f9ca52f04b6571c9b29b2de47a82e4  squid-2.5.STABLE3-6.3E.8.i386.rpm

ia64:
429a13ef1b3e9dce3fe157cd3b6d1651  squid-2.5.STABLE3-6.3E.8.ia64.rpm

ppc:
e3f3bab5baefba94302135e61499683f  squid-2.5.STABLE3-6.3E.8.ppc.rpm

s390:
0c97fc7f12ac29445de550ec866feb82  squid-2.5.STABLE3-6.3E.8.s390.rpm

s390x:
9a2a1b5c70a510695ee560fe55358228  squid-2.5.STABLE3-6.3E.8.s390x.rpm

x86_64:
c2757abe79275c3b8ff61abb3a9c2406  squid-2.5.STABLE3-6.3E.8.x86_64.rpm

Red Hat Desktop version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/squid-2.5.STABLE3-6.3E.8.src.rpm
ee14ff8dd48ea6e08c97dd4c2167550a  squid-2.5.STABLE3-6.3E.8.src.rpm

i386:
25f9ca52f04b6571c9b29b2de47a82e4  squid-2.5.STABLE3-6.3E.8.i386.rpm

x86_64:
c2757abe79275c3b8ff61abb3a9c2406  squid-2.5.STABLE3-6.3E.8.x86_64.rpm

Red Hat Enterprise Linux ES version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/squid-2.5.STABLE3-6.3E.8.src.rpm
ee14ff8dd48ea6e08c97dd4c2167550a  squid-2.5.STABLE3-6.3E.8.src.rpm

i386:
25f9ca52f04b6571c9b29b2de47a82e4  squid-2.5.STABLE3-6.3E.8.i386.rpm

ia64:
429a13ef1b3e9dce3fe157cd3b6d1651  squid-2.5.STABLE3-6.3E.8.ia64.rpm

x86_64:
c2757abe79275c3b8ff61abb3a9c2406  squid-2.5.STABLE3-6.3E.8.x86_64.rpm

Red Hat Enterprise Linux WS version 3:

SRPMS:
ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/squid-2.5.STABLE3-6.3E.8.src.rpm
ee14ff8dd48ea6e08c97dd4c2167550a  squid-2.5.STABLE3-6.3E.8.src.rpm

i386:
25f9ca52f04b6571c9b29b2de47a82e4  squid-2.5.STABLE3-6.3E.8.i386.rpm

ia64:
429a13ef1b3e9dce3fe157cd3b6d1651  squid-2.5.STABLE3-6.3E.8.ia64.rpm

x86_64:
c2757abe79275c3b8ff61abb3a9c2406  squid-2.5.STABLE3-6.3E.8.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://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE8-dns_assert
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0446

8. Contact:

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

Copyright 2005 Red Hat, Inc.