RHSA-2003:280 - Security Advisory

Topic

Updated OpenSSH packages are now available that fix bugs that may be
remotely exploitable.

[Updated 17 Sep 2003]
Updated packages are now available to fix additional buffer manipulation
problems which were fixed in OpenSSH 3.7.1. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2003-0695 to
these additional issues.

We have also included fixes from Solar Designer for some additional memory
bugs. The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0682 to these issues.

Description

OpenSSH is a suite of network connectivity tools that can be used to
establish encrypted connections between systems on a network and can
provide interactive login sessions and port forwarding, among other functions.

The OpenSSH team has announced a bug which affects the OpenSSH buffer
handling code. This bug has the potential of being remotely exploitable.
The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the name CAN-2003-0693 to this issue.

All users of OpenSSH should immediately apply this update which contains a
backported fix for this issue.

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

Affected Products

• Red Hat Enterprise Linux Server 2 ia64
• Red Hat Enterprise Linux Server 2 i386
• Red Hat Enterprise Linux Workstation 2 ia64
• Red Hat Enterprise Linux Workstation 2 i386

Fixes

• BZ - 104490 - CAN-2003-0693/5 OpenSSH buffer allocation bug

CVEs

• CVE-2003-0682
• CVE-2003-0695
• CVE-2003-0693

References

(none)