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[RHSA-2004:157-01] Updated cadaver package fixes security vulnerability in neon



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                   Red Hat Security Advisory

Synopsis:          Updated cadaver package fixes security vulnerability in neon
Advisory ID:       RHSA-2004:157-01
Issue date:        2004-04-14
Updated on:        2004-04-14
Product:           Red Hat Enterprise Linux
Keywords:          
Cross references:  
Obsoletes:         
CVE Names:         CAN-2004-0179
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1. Topic:

An updated cadaver package that fixes a vulnerability in neon exploitable 
by a malicious DAV server 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:

cadaver is a command-line WebDAV client that uses inbuilt code from neon,
an HTTP and WebDAV client library.

Versions of the neon client library up to and including 0.24.4 have been
found to contain a number of format string bugs.  An attacker could create
a malicious WebDAV server in such a way as to allow arbitrary code
execution on the client should a user connect to it using cadaver.  The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2004-0179 to this issue.

Users of cadaver are advised to upgrade to this updated package, which
contains a patch correcting this issue.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade.  Only those
RPMs which are currently installed will be updated.  Those RPMs which are
not installed but included in the list will not be updated.  Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network.  Many
people find this an easier way to apply updates.  To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL
Certificate Errors, you need to install a version of the
up2date client with an updated certificate.  The latest version of
up2date is available from the Red Hat FTP site and may also be
downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. RPMs required:

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

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm

i386:
Available from Red Hat Network: cadaver-0.22.0-2.1.i386.rpm

ia64:
Available from Red Hat Network: cadaver-0.22.0-2.1.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm

ia64:
Available from Red Hat Network: cadaver-0.22.0-2.1.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm

i386:
Available from Red Hat Network: cadaver-0.22.0-2.1.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm

i386:
Available from Red Hat Network: cadaver-0.22.0-2.1.i386.rpm



6. Verification:

MD5 sum                          Package Name
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fb2da5b61169eb8aba7ed4048776dd70 2.1AS/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm
cf08ce3e0b0b81115edfe6ad441f7774 2.1AS/en/os/i386/cadaver-0.22.0-2.1.i386.rpm
c9adaf20af6f5ba133cff98072129fa3 2.1AS/en/os/ia64/cadaver-0.22.0-2.1.ia64.rpm
fb2da5b61169eb8aba7ed4048776dd70 2.1AW/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm
c9adaf20af6f5ba133cff98072129fa3 2.1AW/en/os/ia64/cadaver-0.22.0-2.1.ia64.rpm
fb2da5b61169eb8aba7ed4048776dd70 2.1ES/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm
cf08ce3e0b0b81115edfe6ad441f7774 2.1ES/en/os/i386/cadaver-0.22.0-2.1.i386.rpm
fb2da5b61169eb8aba7ed4048776dd70 2.1WS/en/os/SRPMS/cadaver-0.22.0-2.1.src.rpm
cf08ce3e0b0b81115edfe6ad441f7774 2.1WS/en/os/i386/cadaver-0.22.0-2.1.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key is
available from https://www.redhat.com/security/team/key.html

You can verify each package with the following command:
    
    rpm --checksig -v <filename>

If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
    
    md5sum <filename>


7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0179

8. Contact:

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

Copyright 2004 Red Hat, Inc.
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