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                   Red Hat, Inc. Red Hat Security Advisory

Synopsis: Updated scrollkeeper packages fix tempfile vulnerability
Advisory ID: RHSA-2002:186-07
Issue date: 2002-08-19
Updated on: 2002-08-28
Product: Red Hat Linux
Keywords: scrollkeeper tmpfile symlink
Cross references:
Obsoletes:
CVE Names: CAN-2002-0662
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1. Topic:

Updated scrollkeeper packages are now available for Red Hat Linux 7.3 which
fix a tempfile vulnerability.

2. Relevant releases/architectures:

Red Hat Linux 7.3 - i386

3. Problem description:

ScrollKeeper is a cataloging system for documentation. All versions of
ScrollKeeper between 0.3 and 0.3.11 have a tempfile vulnerability.

The scrollkeeper-get-cl command generates temporary files in the /tmp
directory. These files are named scrollkeeper-tempfile.[0-4], and while
creating these files scrollkeeper-get-cl follows symbolic links. These
files are created when a user logs in to a GNOME session and are created as
the user who logged in. This means an attacker with local access can easily
create and overwrite files as another user.

This errata updates ScrollKeeper packages for Red Hat Linux 7.3 with
patches that prevent ScrollKeeper from following symlinks when creating
temporary files. Previous releases of Red Hat Linux do not contain
vulnerable versions of Scrollkeeper.

Thanks go to Spybreak for discovering and responsibly disclosing this
vulnerability.

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.

5. RPMs required:

Red Hat Linux 7.3:

SRPMS:
ftp://updates.redhat.com/7.3/en/os/SRPMS/scrollkeeper-0.3.4-5.src.rpm

i386:
ftp://updates.redhat.com/7.3/en/os/i386/scrollkeeper-0.3.4-5.i386.rpm

6. Verification:

MD5 sum Package Name
--------------------------------------------------------------------------
3b2ca2295952d763516669a0a3dcc74d 7.3/en/os/SRPMS/scrollkeeper-0.3.4-5.src.rpm
392a5149a4b0e8abce9c350c88ee827a 7.3/en/os/i386/scrollkeeper-0.3.4-5.i386.rpm

These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
    http://www.redhat.com/about/contact/pgpkey.html

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

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0662

Copyright(c) 2000, 2001, 2002 Red Hat, Inc.

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