RHSA-2005:495-01: Low: rsh security update
Posted on: 06/13/2005 12:14 PM

A rsh security update is available for Red Hat Enterprise Linux 2.1

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Red Hat Security Advisory

Synopsis: Low: rsh security update
Advisory ID: RHSA-2005:495-01
Advisory URL: https://rhn.redhat.com/errata/RHSA-2005-495.html
Issue date: 2005-06-13
Updated on: 2005-06-13
Product: Red Hat Enterprise Linux
CVE Names: CAN-2004-0175
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1. Summary:

Updated rsh packages that fix a theoretical security issue are now available.

This update has been rated as having low security impact by the Red Hat Security Response Team

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:

The rsh package contains a set of programs that allow users to run commands on remote machines, login to other machines, and copy files between machines, using the rsh, rlogin, and rcp commands. All three of these commands use rhosts-style authentication.

The rcp protocol allows a server to instruct a client to write to arbitrary files outside of the current directory. This could potentially cause a security issue if a user uses rcp to copy files from a malicious server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0175 to this issue.

All users of rsh should upgrade to these updated packages, which resolve 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:

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

158916 - CAN-2004-0175 malicious rsh server can cause rcp to write to arbitrary files


6. RPMs required:

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

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/rsh-0.17-18.AS21.4.src.rpm
97e3fc12d40b985c90c1da4feb8d7e44 rsh-0.17-18.AS21.4.src.rpm

i386:
53f2f58873f6b1448138b0051fc4d0c8 rsh-0.17-18.AS21.4.i386.rpm
7f1279fd4dd249e01309dc4d71506849 rsh-server-0.17-18.AS21.4.i386.rpm

ia64:
39238168acaff66c7366db659f48809d rsh-0.17-18.AS21.4.ia64.rpm
87c3d4bb78f30940d49a289bb149647d rsh-server-0.17-18.AS21.4.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/rsh-0.17-18.AS21.4.src.rpm
97e3fc12d40b985c90c1da4feb8d7e44 rsh-0.17-18.AS21.4.src.rpm

ia64:
39238168acaff66c7366db659f48809d rsh-0.17-18.AS21.4.ia64.rpm
87c3d4bb78f30940d49a289bb149647d rsh-server-0.17-18.AS21.4.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/rsh-0.17-18.AS21.4.src.rpm
97e3fc12d40b985c90c1da4feb8d7e44 rsh-0.17-18.AS21.4.src.rpm

i386:
53f2f58873f6b1448138b0051fc4d0c8 rsh-0.17-18.AS21.4.i386.rpm
7f1279fd4dd249e01309dc4d71506849 rsh-server-0.17-18.AS21.4.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/rsh-0.17-18.AS21.4.src.rpm
97e3fc12d40b985c90c1da4feb8d7e44 rsh-0.17-18.AS21.4.src.rpm

i386:
53f2f58873f6b1448138b0051fc4d0c8 rsh-0.17-18.AS21.4.i386.rpm
7f1279fd4dd249e01309dc4d71506849 rsh-server-0.17-18.AS21.4.i386.rpm

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0175

8. Contact:

The Red Hat security contact is lt;secalert@redhat.comgt;. More contact details at https://www.redhat.com/security/team/contact/

Copyright 2005 Red Hat, Inc.


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