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                   Red Hat Security Advisory

Synopsis:          Updated mod_ssl package fixes minor vulnerability
Advisory ID:       RHSA-2004:408-01
Issue date:        2004-09-07
Updated on:        2004-09-07
Product:           Red Hat Enterprise Linux
CVE Names:         CAN-2004-0700
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1. Summary:

An updated mod_ssl package for Apache that fixes a format string
vulnerability is now available.

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 WS version 2.1 - i386

3. Problem description:

The mod_ssl module provides strong cryptography for the Apache Web
server via the Secure Sockets Layer (SSL) and Transport Layer Security
(TLS) protocols.

A format string issue was discovered in mod_ssl for Apache 1.3 which can be
triggered if mod_ssl is configured to allow a client to proxy to remote SSL
sites.  In order to exploit this issue, a user who is authorized to use
Apache as a proxy would have to attempt to connect to a carefully crafted
hostname via SSL.  The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2004-0700 to this issue.

Users of mod_ssl should upgrade to this updated package, which contains a
backported patch to correct 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/ for more info):

128170 - CAN-2004-0700 mod_ssl format string vulnerability

6. RPMs required:

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

SRPMS: 

209d559b50b81524606203cada5c4b68  mod_ssl-2.8.12-6.src.rpm

i386:
ecb068475e82644cfa0ed913b3bd1dc2  mod_ssl-2.8.12-6.i386.rpm

ia64:
483397e046e50c433d85bd74c3f8d7e4  mod_ssl-2.8.12-6.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS: 

209d559b50b81524606203cada5c4b68  mod_ssl-2.8.12-6.src.rpm

ia64:
483397e046e50c433d85bd74c3f8d7e4  mod_ssl-2.8.12-6.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS: 

209d559b50b81524606203cada5c4b68  mod_ssl-2.8.12-6.src.rpm

i386:
ecb068475e82644cfa0ed913b3bd1dc2  mod_ssl-2.8.12-6.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS: 

209d559b50b81524606203cada5c4b68  mod_ssl-2.8.12-6.src.rpm

i386:
ecb068475e82644cfa0ed913b3bd1dc2  mod_ssl-2.8.12-6.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
 

7. References:
 
CVE -CVE-2004-0700

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at