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RedHat: w3m XSS vulnerability Print E-mail
User Rating:      How can I rate this item?
Posted by Team   
RedHat Linux Two cross-site scripting (XSS) issues have been found in w3m.

                   Red Hat, Inc. Red Hat Security Advisory

Synopsis:          Updated w3m packages fix cross-site scripting issues
Advisory ID:       RHSA-2003:044-20
Issue date:        0000-01-01
Updated on:        2003-02-06
Product:           Red Hat Linux
Keywords:          w3m frame html tag flaw:css
Cross references:  
CVE Names:         CAN-2002-1335 CAN-2002-1348

1. Topic:

New w3m packages are available that fix two cross-site scripting issues.

2. Relevant releases/architectures:

Red Hat Linux 7.0J - i386
Red Hat Linux 7.2 - i386, ia64
Red Hat Linux 7.3 - i386
Red Hat Linux 8.0 - i386

3. Problem description:

w3m is a pager with Web browsing capabilities.  Two cross-site scripting
(XSS) issues have been found in w3m.

An XSS vulnerability in w3m 0.3.2 allows remote attackers to insert
arbitrary HTML and web script into frames.  Frames are disabled by default
in the version of w3m shipped with Red Hat Linux.  Therefore, this problem
will not appear as long as users do not use w3m with the -F option, or
enable frame support in either the /etc/w3m/w3mconfig or ~/.w3m/config
configuration files.  The Common Vulnerabilities and Exposures project
( has assigned the name CAN-2002-1335 to this issue.

An XSS vulnerability in versions of w3m before allows attackers to
insert arbitrary HTML and web script into image attributes.  The Common
Vulnerabilities and Exposures project ( has assigned the name
CAN-2002-1348 to this issue

Users of w3m under Red Hat Linux versions 7.0J, 7.2, 7.3, and 8.0 are
advised to upgrade to the updated packages containing w3m 0.3.1 with
a patch to correct these issues.

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:


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

5. RPMs required:

Red Hat Linux 7.0J:



Red Hat Linux 7.2:




Red Hat Linux 7.3:



Red Hat Linux 8.0:



6. Verification:

MD5 sum                          Package Name
e9a6c283b284047510efc84c5a367e78 7.0/ja/os/SRPMS/w3m-0.3.1-
02b64e00eada264f0e5fba3832623eca 7.0/ja/os/i386/w3m-0.3.1-
1050198ea9b7c9d841fefeec8d4fd64d 7.2/en/os/SRPMS/w3m-0.3.1-4.7.2.src.rpm
4f04c584240a977e9a6027fd5d9f9238 7.2/en/os/i386/w3m-0.3.1-4.7.2.i386.rpm
713258f63ed6326ba3faba2c1cfcb81a 7.2/en/os/ia64/w3m-0.3.1-4.7.2.ia64.rpm
d0719437998424b5872e44ec21681150 7.3/en/os/SRPMS/w3m-0.3.1-4.7x.1.src.rpm
91a359c78d3d0b546a514d33ab2119ba 7.3/en/os/i386/w3m-0.3.1-4.7x.1.i386.rpm
2a67b50c7b145253eb63c21072dcde0b 8.0/en/os/SRPMS/w3m-0.3.1-6.src.rpm
3c79d5d3d0c74262c5b911b78aa7342e 8.0/en/os/i386/w3m-0.3.1-6.i386.rpm

These packages are GPG signed by Red Hat, Inc. for security.  Our key
is available at  http://www.Red

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

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

7. References:

8. Contact:

The Red Hat security contact is <security@Red>.  More contact
details at  http://www.Red

Copyright 2003 Red Hat, Inc.

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