(Caldera Issues Fix for UnixWare/Open UNIX) CDE 'dtprintinfo' Buffer Overflow in Search Feature Lets Local Users Gain Root Privileges
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SecurityTracker Alert ID: 1004631 |
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CVE Reference: CAN-2001-0551
(Links to External Site)
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Date: Jun 26 2002
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Impact: Execution of arbitrary code via local system, Root access via local system
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Fix Available: Yes
Vendor Confirmed: Yes
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Description: A vulnerability was reported in the Common Desktop Environment (CDE) 'dtprintinfo' utility. A local user may be able to gain root access on the system.
A local user can reportedly insert a specially crafted string into the 'Entries with' field and select a single Help Volume for an
Index search to trigger the buffer overflow. Arbitrary code can be executed with root privileges, giving the local user root level
access on the system.
This vulnerability was reported by Kevin Kotas of eSecurityOnline in one of their advisories, available
at:
http://www.eSecurityOnline.com/advisories/eSO2406.asp
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Impact: A local user can execute arbitrary code with root privileges to gain root access on the system.
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Solution: Caldera has issued a fix for UnixWare and Open UNIX.
For UnixWare 7.1.1:
Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.30
Verification
MD5 (erg712032.pkg.Z) = b654e5f739056ba4a73e07646e88f049
md5 is available for download from
ftp://ftp.caldera.com/pub/security/tools
Inst
alling Fixed Binaries
Upgrade the affected binaries with the following commands:
Download erg712032.pkg.Z to the /var/spool/pkg
directory
# uncompress /var/spool/pkg/erg712032.pkg.Z
# pkgadd -d /var/spool/pkg/erg712032.pkg
For Open UNIX 8.0.0:
Location
of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.30
Verification
MD5 (erg712032.pkg.Z) =
b654e5f739056ba4a73e07646e88f049
md5 is available for download from
ftp://ftp.caldera.com/pub/security/tools
Installing
Fixed Binaries
Upgrade the affected binaries with the following commands:
Download erg712032.pkg.Z to the /var/spool/pkg
directory
# uncompress /var/spool/pkg/erg712032.pkg.Z
# pkgadd -d /var/spool/pkg/erg712032.pkg
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Vendor URL: www.caldera.com/support/security/index.html (Links to External Site)
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Cause: Boundary error
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Underlying OS: UNIX (Open UNIX-SCO)
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Underlying OS Comments: UnixWare 7.1.1, Open UNIX 8.0.0
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Reported By: security@caldera.com
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Message History:
None.
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Source Message Contents
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Date: Tue, 25 Jun 2002 17:34:08 -0700
From: security@caldera.com
Subject: Security Update: [CSSA-2002-SCO.30] UnixWare 7.1.1 Open UNIX 8.0.0 : dtprintinfo buffer overflow with Help search
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To: bugtraq@securityfocus.com announce@lists.caldera.com scoannmod@xenitec.on.ca
______________________________________________________________________________
Caldera International, Inc. Security Advisory
Subject: UnixWare 7.1.1 Open UNIX 8.0.0 : dtprintinfo buffer overflow with Help search
Advisory number: CSSA-2002-SCO.30
Issue date: 2002 June 25
Cross reference:
______________________________________________________________________________
1. Problem Description
The CDE dtprintinfo program is vulnerable to a buffer
overflow condition that allows a local attacker to gain
root access. The problem occurs due to insufficient bounds
checking in the Volume search field from the Help section.
An attacker can insert a specially crafted string for the
search parameter and gain root privileges.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
UnixWare 7.1.1 /usr/dt/lib/libDtHelp.so.1
Open UNIX 8.0.0 /usr/dt/lib/libDtHelp.so.1
3. Solution
The proper solution is to install the latest packages.
4. UnixWare 7.1.1
4.1 Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.30
4.2 Verification
MD5 (erg712032.pkg.Z) = b654e5f739056ba4a73e07646e88f049
md5 is available for download from
ftp://ftp.caldera.com/pub/security/tools
4.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
Download erg712032.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg712032.pkg.Z
# pkgadd -d /var/spool/pkg/erg712032.pkg
5. Open UNIX 8.0.0
5.1 Location of Fixed Binaries
ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.30
5.2 Verification
MD5 (erg712032.pkg.Z) = b654e5f739056ba4a73e07646e88f049
md5 is available for download from
ftp://ftp.caldera.com/pub/security/tools
5.3 Installing Fixed Binaries
Upgrade the affected binaries with the following commands:
Download erg712032.pkg.Z to the /var/spool/pkg directory
# uncompress /var/spool/pkg/erg712032.pkg.Z
# pkgadd -d /var/spool/pkg/erg712032.pkg
6. References
Specific references for this advisory:
http://www.eSecurityOnline.com/advisories/eSO2406.asp
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2001-0551
Caldera security resources:
http://www.caldera.com/support/security/index.html
This security fix closes Caldera incidents sr863696, fz520821,
erg712032.
7. Disclaimer
Caldera International, Inc. is not responsible for the
misuse of any of the information we provide on this website
and/or through our security advisories. Our advisories are
a service to our customers intended to promote secure
installation and use of Caldera products.
8. Acknowledgements
Kevin Kotas of eSecurityOnline discovered this vulnerability.
______________________________________________________________________________
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