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Red Hat Linux Advisories: up2date, Xft

Aug 08, 2003, 19:57 (0 Talkback[s])

Red Hat Security Advisory

Synopsis: up2date improperly checks GPG signature of packages
Advisory ID: RHSA-2003:255-01
Issue date: 2003-08-08
Updated on: 2003-08-08
Product: Red Hat Linux
Keywords: up2date gpg Red Hat Network RHN rpm
Cross references:
Obsoletes:
CVE Names: CAN-2003-0546

1. Topic:

Updated up2date packages for Red Hat Linux 8.0 and 9 fix RPM GPG signature verification.

2. Relevant releases/architectures:

Red Hat Linux 8.0 - i386
Red Hat Linux 9 - i386

3. Problem description:

The Red Hat Update Agent, up2date, automatically queries the Red Hat Network servers and determines which packages need to be updated on your machine.

up2date versions 3.0.7 and 3.1.23 incorrectly check RPM GPG signatures. These are the versions found in Red Hat Linux 8.0 and 9.

This bug allows packages which have no GPG signature to be installed by up2date if they are provided by the Red Hat Network servers. The intended behaviour is that only packages signed with the Red Hat package signing key will be installed.

For an attacker to make use of this flaw, they would have to make unsigned packages appear on the Red Hat Network. Connections to the Red Hat Network servers are authenticated and verified by the use of SSL, so it is not possible to intercept the connection to Red Hat Network servers and give unsigned packages. To make use of this flaw, an attacker would have to compromise the Red Hat Network servers at Red Hat.

Because of these factors, the risk of exploiting this bug is low. However, we advise that all users of up2date update to these erratum packages.

Note that all other variations of package signature checks work correctly.

The fix was to change the code so that packages with no GPG signature are rejected in the same way as those with bad GPG signatures (the up2date client refuses to install them).

Red Hat would like to thank Barry Nathan for finding and reporting this error.

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 8.0:

SRPMS:
ftp://updates.redhat.com/8.0/en/os/SRPMS/up2date-3.0.7.1-2.src.rpm

i386:
ftp://updates.redhat.com/8.0/en/os/i386/up2date-3.0.7.1-2.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i386/up2date-gnome-3.0.7.1-2.i386.rpm

Red Hat Linux 9:

SRPMS:
ftp://updates.redhat.com/9/en/os/SRPMS/up2date-3.1.23.1-5.src.rpm

i386:
ftp://updates.redhat.com/9/en/os/i386/up2date-3.1.23.1-5.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/up2date-gnome-3.1.23.1-5.i386.rpm

6. Verification:

MD5 sum Package Name


606193c00a7fb419b4952b68f1245082 8.0/en/os/SRPMS/up2date-3.0.7.1-2.src.rpm
be91944cf454244846a96b94a3efaa74 8.0/en/os/i386/up2date-3.0.7.1-2.i386.rpm
0adeb9cf7fff1754d183894fa40111bc 8.0/en/os/i386/up2date-gnome-3.0.7.1-2.i386.rpm
99d3b05223b596cf8d949c27b48e2ebd 9/en/os/SRPMS/up2date-3.1.23.1-5.src.rpm
c6e89c3f118b5734a34d7275d8156596 9/en/os/i386/up2date-3.1.23.1-5.i386.rpm
bf0b79cfeaaa6ed947609a27da5c2d65 9/en/os/i386/up2date-gnome-3.1.23.1-5.i386.rpm

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

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:

md5sum

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0546

8. Contact:

The Red Hat security contact is <<A HREF="mailto:secalert@redhat.com">secalert@redhat.com>. More contact details at http://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.


Red Hat Bug Fix Advisory

Synopsis: Fix memory leak in Xft
Advisory ID: RHBA-2002:305-01
Issue date: 2003-08-08
Updated on: 2003-08-08
Product: Red Hat Linux
Keywords: Xft gnome-terminal konsole memory leak
Cross references:
Obsoletes:

1. Topic:

A memory leak was discovered in the Xft library on non-RENDER X servers. This errata fixes the issue.

2. Relevant releases/architectures:

Red Hat Linux 8.0 - i386

3. Problem description:

The Xft memory leak manifests itself when any GTK+ 2.0, Qt 3.0, or other Xft-based application renders text on an X server that lacks the RENDER extension. This includes the VNC X server and the default XFree86 X server for some video chipsets, as well as many X servers shipped with past versions of Red Hat Linux or with other operating systems.

The bug occurs most commonly with terminal applications as their extensive text handling resulted in rapid memory leaks. However most applications are impacted by the bug.

It is recommended that all users install this update.

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. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):

76219 - gnome-terminal memory leak

6. RPMs required:

Red Hat Linux 8.0:

SRPMS:
ftp://updates.redhat.com/8.0/en/os/SRPMS/Xft-2.0-4.src.rpm

i386:
ftp://updates.redhat.com/8.0/en/os/i386/Xft-2.0-4.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i386/Xft-devel-2.0-4.i386.rpm

7. Verification:

MD5 sum Package Name


ebdaa5568cab2a6127f6a9409a47cc41 8.0/en/os/SRPMS/Xft-2.0-4.src.rpm
6209c7cfbbe98730f86123455ff8ef32 8.0/en/os/i386/Xft-2.0-4.i386.rpm
be1bce9818dc4c6233246b75e95aaeb0 8.0/en/os/i386/Xft-devel-2.0-4.i386.rpm

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

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:

md5sum

8. Contact:

The Red Hat security contact is <<A HREF="mailto:secalert@redhat.com">secalert@redhat.com>. More contact details at http://www.redhat.com/solutions/security/news/contact.html

Copyright 2003 Red Hat, Inc.