91673 2003-02-25 17:18 /129 rader/ <bugzilla@redhat.com>
Importerad: 2003-02-25 17:18 av Brevbäraren
Extern mottagare: redhat-watch-list@redhat.com
Extern mottagare: redhat-announce-list@redhat.com
Mottagare: Bugtraq (import) <3663>
Ärende: [RHSA-2003:053-10] Updated vte packages fix gnome-terminal vulnerability
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Red Hat, Inc. Red Hat Security Advisory
Synopsis: Updated vte packages fix gnome-terminal vulnerability
Advisory ID: RHSA-2003:053-10
Issue date: 2003-02-06
Updated on: 2003-02-24
Product: Red Hat Linux
Keywords: window title
Cross references:
Obsoletes:
CVE Names: CAN-2003-0070
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1. Topic:
Updated vte packages that fix a vulnerability in gnome-terminal are
available for Red Hat Linux 8.0.
2. Relevant releases/architectures:
Red Hat Linux 8.0 - i386
3. Problem description:
VTE is an terminal emulator widget used by software such as
gnome-terminal.
One feature that most terminal emulators support is the ability for
the shell to set the title of the window using an escape sequence.
Certain xterm variants also provide an escape sequence for reporting
the current window title. This essentially takes the current title
and places it directly on the command line. This feature could be
potentially exploited if an attacker can cause carefully crafted
escape sequences to be displayed on a vulnerable terminal emulator
used by their victim.
Since it is not possible to embed a carriage return into the window
title itself, the attacker would have to convince the victim to hit
enter for it to process the title as a command, although the attacker
can perform a number of actions to increase the likelyhood of this
happening.
VTE is vulnerable to this issue and is used as the default terminal
emulator for versions of gnome-terminal shipped with Red Hat Linux
8.0. Previous releases of Red Hat Linux do not contain a vulnerable
version of gnome-terminal.
Users of gnome-terminal on Red Hat Linux 8.0 are advised to upgrade
to these errata packages, which contain a patch to disable the title
reporting functionality.
Red Hat would like to thank H D Moore for bringing these issues to our
attention.
Please note; because this update contains a fixed shared library used
by gnome-terminal, the vulnerable code will continue to be in use as
long as any gnome-terminal session remains active. The easiest way to
ensure that the vulnerable code is no longer in use is to log out of
your window manager. Alternatively all running gnome-terminal
sessions can be closed.
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/vte-0.8.19-2.src.rpm
i386:
ftp://updates.redhat.com/8.0/en/os/i386/vte-0.8.19-2.i386.rpm
ftp://updates.redhat.com/8.0/en/os/i386/vte-devel-0.8.19-2.i386.rpm
6. Verification:
MD5 sum Package Name
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2b91fffb6e98aa9542cbdb3a0508cc49 8.0/en/os/SRPMS/vte-0.8.19-2.src.rpm
a274eeb1dd40afeed45ea2f7601a6bac 8.0/en/os/i386/vte-0.8.19-2.i386.rpm
e4172c1224bc77357a0f0a8c315f2dc5 8.0/en/os/i386/vte-devel-0.8.19-2.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 -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-2003-0070
8. Contact:
The Red Hat security contact is <security@redhat.com>. More contact
details at http://www.redhat.com/solutions/security/news/contact.html
Copyright 2003 Red Hat, Inc.
(91673) / <bugzilla@redhat.com>/----------(Ombruten)