(Caldera Issues Fix for Open UNIX) ToolTalk Database Server Format String Flaw Lets Remote Users Gain Root Level Privileges on Several UNIX Operating System Platforms
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SecurityTracker Alert ID: 1002687 |
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SecurityTracker URL: http://securitytracker.com/id/1002687
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CVE Reference:
CVE-2001-0717
(Links to External Site)
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Date: Nov 2 2001
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Impact:
Execution of arbitrary code via network, Root access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): UnixWare 7, all versions; Open UNIX 8.0.0
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Description:
Internet Security Systems warned of a format string vulnerability in several vendors' implementations of the ToolTalk RPC database server (rpc.ttdbserver) that could allow remote users to crash the service or obtain root level privileges on the server.
ToolTalk reportedly contains a syslog() call that accepts unfiltered user-supplied input and will interpret user-supplied formatting arguments, allowing a remote user to supply a specially crafted protocol message to execute arbitrary code via the syslog() call.
ISS notes that the rpc.ttdbserverd is enabled by default on many popular Unix operating systems, even when it is not required.
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Impact:
A remote user can cause arbitrary code to be executed with root level privileges, yielding root level access on the server.
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Solution:
The vendor has released a fix for UnixWare 7 and Open UNIX 8:
ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.29/
The verification checksums are:
4bbe212984cb84a6d371ec36b2fb47cc erg711780.Z
To upgrade the affected binaries, use the following commands:
# uncompress /tmp/erg711780.Z
# pkgadd -d /tmp/erg711780
See the Source Message for the vendor's advisory.
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Vendor URL: www.calderasystems.com/support/security/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
UNIX (Open UNIX-SCO)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 1 Nov 2001 16:34:06 -0800
Subject: Security Update: [CSSA-2001-SCO.29] Open UNIX, UnixWare 7: DCE ToolTalk library buffer overflow
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To: bugtraq@securityfocus.com security-announce@lists.securityportal.com announce@lists.caldera.com scoannmod@xenitec.on.ca
___________________________________________________________________________
Caldera International, Inc. Security Advisory
Subject: Open UNIX, UnixWare 7: DCE ToolTalk library buffer overflow
Advisory number: CSSA-2001-SCO.29
Issue date: 2001 November 1
Cross reference:
___________________________________________________________________________
1. Problem Description
There is a buffer overrun in the DCE ToolTalk library. Several
programs in /usr/dt/bin use this library.
2. Vulnerable Versions
Operating System Version Affected Files
------------------------------------------------------------------
UnixWare 7 All /usr/dt/lib/libtt.so.1
Open UNIX 8.0.0 /usr/dt/lib/libtt.so.1
3. Workaround
None.
4. UnixWare 7, Open UNIX 8
4.1 Location of Fixed Binaries
ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.29/
4.2 Verification
md5 checksums:
4bbe212984cb84a6d371ec36b2fb47cc erg711780.Z
md5 is available for download from
ftp://stage.caldera.com/pub/security/tools/
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
# uncompress /tmp/erg711780.Z
# pkgadd -d /tmp/erg711780
5. References
This and other advisories are located at
http://stage.caldera.com/support/security
This advisory addresses Caldera Security internal incidents
sr854237, fz519120, and erg711870.
6. Disclaimer
Caldera International, Inc. is not responsible for the misuse
of any of the information we provide on our website and/or
through our security advisories. Our advisories are a service
to our customers intended to promote secure installation and
use of Caldera International products.
___________________________________________________________________________
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