Note: This is an archival copy of Security Sun Alert 200261 as previously published on http://sunsolve.sun.com.
Latest version of this security advisory is available from http://support.oracle.com as Sun Alert 1000205.1.
Article ID : 1000205.1
Article Type : Sun Alerts (SURE)
Last reviewed : 2010-01-19
Audience : PUBLIC
Copyright Notice: Copyright © 2010, Oracle Corporation and/or its affiliates.

The FTP Daemon of Heimdal is Vulnerable to Multiple Signal Handler Race Conditions

Category
Security

Release Phase
Resolved

Bug Id
6175051

Date of Resolved Release
15-OCT-2004

FTP daemon of Heimdal is vulnerable to multiple signal handler race conditions ...

1. Impact

The FTP daemon of Heimdal is vulnerable to multiple signal handler race conditions that may allow an unprivileged remote or local user to execute aribitrary code with the privileges (typically root) of the FTP server process .

Note: Heimdal (heimdal.info) is a free implementation of Kerberos 5.

This issue is described in the following documents:


2. Contributing Factors

This issue can occur in the following releases:

Linux

  • Sun Java Desktop System (JDS) 2003 without the updated RPMs (patch-9369)
  • Sun Java Desktop System (JDS) Release 2 without the updated RPMs (patch-9369)

Note: JDS for Solaris is not impacted by this issue.

This issue only occurs with Heimdal FTP versions heimdal-0.4e-396 or earlier.

To determine the release of JDS for Linux installed on a system, the following command can be run: 

    % cat /etc/sun-release
Sun Java Desktop System, Release 2 -build 10b (GA)
Assembled 30 March 2004

To determine the version of Heimdal, the following command can be run: 

    % rpm -qf /usr/lib/heimdal/sbin/ftpd
heimdal-0.4e-396

3. Symptoms

There are no predictable symptoms that would indicate the described issue has been exploited.


4. Workaround

There is no workaround. Please see the "Resolution" section below.


5. Resolution

This issue is addressed in the following releases:

Linux

  • Sun Java Desktop System (JDS) 2003 with the updated RPMs (patch-9369)
  • Sun Java Desktop System (JDS) Release 2 with the updated RPMs (patch-9369)

To download and install the updated RPMs from the update servers select the following from the launch bar: 

    Launch >> Applications >> System Tools >> Online Update

For more information on obtaining updates see:


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Product
Sun Java Desktop System Release 2





















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