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                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:
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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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