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                        SCO Security Advisory

Subject: Linux: remote buffer overflow in webalizer reverse lookup code
Advisory number: CSSA-2002-036.0
Issue date: 2002 October 22
Cross reference:
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1. Problem Description

        The webalizer program will perform reverse DNS lookups. Using
        a buffer overflow in this reverse lookup code, an attacker with
        a rogue DNS server can gain root access to the machine running
        webalizer.

2. Vulnerable Supported Versions

        System Package
        ----------------------------------------------------------------------

        OpenLinux 3.1.1 Server prior to webalizer-2.01_09-2.i386.rpm

        OpenLinux 3.1 Server prior to webalizer-2.01_09-2.i386.rpm

3. Solution

        The proper solution is to install the latest packages. Many
        customers find it easier to use the Caldera System Updater, called
        cupdate (or kcupdate under the KDE environment), to update these
        packages rather than downloading and installing them by hand.

4. OpenLinux 3.1.1 Server

        4.1 Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-036.0/RPMS

        4.2 Packages

        db8c5037801e807a6138f2fd5e3cf284 webalizer-2.01_09-2.i386.rpm

        4.3 Installation

        rpm -Fvh webalizer-2.01_09-2.i386.rpm

        4.4 Source Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-036.0/SRPMS

        4.5 Source Packages

        03e6b22634832fd3cd1752318f1d83d4 webalizer-2.01_09-2.src.rpm

5. OpenLinux 3.1 Server

        5.1 Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-036.0/RPMS

        5.2 Packages

        258245a154ba0b220b56cde31b2e3c7d webalizer-2.01_09-2.i386.rpm

        5.3 Installation

        rpm -Fvh webalizer-2.01_09-2.i386.rpm

        5.4 Source Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-036.0/SRPMS

        5.5 Source Packages

        fef58e3e929062180bf1bc6ad885925e webalizer-2.01_09-2.src.rpm

6. References

        Specific references for this advisory:
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0180

        SCO security resources:
                http://www.sco.com/support/security/index.html

        This security fix closes SCO incidents sr863733, fz520840,
        erg712035.

7. Disclaimer

        SCO 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 SCO products.

8. Acknowledgements

        Spybreak (spybreakhost.sk) discovered and researched this
        vulnerability.

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