(Caldera Issues Fix for UnixWare and Open UNIX) Re: ToolTalk Database Server Format String Flaw Lets Remote Users Gain Root Level Privileges on Several UNIX Operating System Platforms
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Date: Oct 17 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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Advisory: Internet Security Systems (X-Force)
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Version(s): HP-UX 10.10, 10.20, 11.00, 11.11; AIX 4.3, 5.1; IRIX 5.2-6.4; Tru64 DIGITAL UNIX v4.0f, v4.0g, v5.0a, v5.1, v5.1a; Solaris 1.1-1.2, 2.0-2.7, 7, 8
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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: Caldera has released fixed binaries for UnixWare 7 and Open UNIX 8.0.0. The binaries are available at:
ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-
SCO.28/
The md5 verification checksum is:
b15a904dd742eb1263429b00fb1a1c20 erg711831.Z
Upgrade the
affected binaries with the following commands:
# uncompress /tmp/erg711831.Z
# pkgadd -d /tmp/erg711831
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Cause: Input validation error
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Underlying OS: UNIX (SCO)
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Underlying OS Comments: Other operating systems may be affected
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Reported By: sco-security@caldera.com
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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: Tue, 16 Oct 2001 16:15:06 -0700
From: sco-security@caldera.com
Subject: Security Update: [CSSA-2001-SCO.28] Open UNIX, UnixWare 7: rpc.ttdbserverd format string vulnerability
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To: bugtraq@securityfocus.com security-announce@lists.securityportal.com announce@lists.caldera.com s
coannmod@xenitec.on.ca
Do not reply to this mail. This security advisory is being sent from a
nonexistent address in order to avoid spam problems. Caldera's
contact address for UNIX security issues is security-alert@caldera.com.
___________________________________________________________________________
Caldera International, Inc. Security Advisory
Subject: Open UNIX, UnixWare 7: rpc.ttdbserverd format string vulnerability
Advisory number: CSSA-2001-SCO.28
Issue date: 2001 October 16
Cross reference:
___________________________________________________________________________
1. Problem Description
The rpc.ttdbserverd command is vulnerable to a format string
attack. This could be used by an unauthorized user to gain
privilege.
2. Vulnerable Versions
Operating System Version Affected Files
------------------------------------------------------------------
UnixWare 7 All /usr/dt/bin/rpc.ttdbserverd
Open UNIX 8.0.0 /usr/dt/bin/rpc.ttdbserverd
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.28/
4.2 Verification
md5 checksums:
b15a904dd742eb1263429b00fb1a1c20 erg711831.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/erg711831.Z
# pkgadd -d /tmp/erg711831
5. References
http://www.securityfocus.com/archive/1/217901
http://www.securityfocus.com/advisories/3583
This and other advisories are located at
http://stage.caldera.com/support/security
This advisory addresses Caldera Security internal incidents
sr851392, fz518746 and erg711831.
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.
7. Acknowledgements
This vulnerability was discovered and researched by Mark Dowd
of the ISS X-Force.
___________________________________________________________________________
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