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                        SCO Security Advisory

Subject: Linux: buffer overflow in nss_ldap DNS SRV
Advisory number: CSSA-2002-058.0
Issue date: 2002 December 10
Cross reference:
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1. Problem Description

        A buffer overflow in the DNS SRV code for nss_ldap allows remote
        attackers to cause a denial of service and possibly execute
        arbitrary code.

2. Vulnerable Supported Versions

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

        OpenLinux 3.1.1 Server prior to nss_ldap-172-5.i386.rpm

        OpenLinux 3.1.1 Workstation prior to nss_ldap-172-5.i386.rpm

        OpenLinux 3.1 Server prior to nss_ldap-172-5.i386.rpm

        OpenLinux 3.1 Workstation prior to nss_ldap-172-5.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-2002-058.0/RPMS

        4.2 Packages

        2f9e141ceaae799721272590043e524d nss_ldap-172-5.i386.rpm

        4.3 Installation

        rpm -Fvh nss_ldap-172-5.i386.rpm

        4.4 Source Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-058.0/SRPMS

        4.5 Source Packages

        b35831284c0413d2e86e450297ba615f nss_ldap-172-5.src.rpm

5. OpenLinux 3.1.1 Workstation

        5.1 Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2002-058.0/RPMS

        5.2 Packages

        a1089ea16a2e35d6a54b5f2256be190f nss_ldap-172-5.i386.rpm

        5.3 Installation

        rpm -Fvh nss_ldap-172-5.i386.rpm

        5.4 Source Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2002-058.0/SRPMS

        5.5 Source Packages

        4a6d0418890bcaf45ab6c6c5e8e17d3b nss_ldap-172-5.src.rpm

6. OpenLinux 3.1 Server

        6.1 Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-058.0/RPMS

        6.2 Packages

        bd1286f5e243e8001d32c21ec1eeb7b0 nss_ldap-172-5.i386.rpm

        6.3 Installation

        rpm -Fvh nss_ldap-172-5.i386.rpm

        6.4 Source Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2002-058.0/SRPMS

        6.5 Source Packages

        3318607550f33f8c0c8902cd6bfc2b81 nss_ldap-172-5.src.rpm

7. OpenLinux 3.1 Workstation

        7.1 Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2002-058.0/RPMS

        7.2 Packages

        b60910e2d16a23f6842c534fe6516027 nss_ldap-172-5.i386.rpm

        7.3 Installation

        rpm -Fvh nss_ldap-172-5.i386.rpm

        7.4 Source Package Location

        ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2002-058.0/SRPMS

        7.5 Source Packages

        30aae498b3ebef5a791219eb2fb80c98 nss_ldap-172-5.src.rpm

8. References

        Specific references for this advisory:

                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0825

        SCO security resources:

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

        This security fix closes SCO incidents sr870483, fz526358,
        erg712144.

9. 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.

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