Caldera Linux Advisory: fetchmail

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                Caldera International, Inc.  Security Advisory

Subject:                Linux: fetchmail imap message count vulnerability
Advisory number:        CSSA-2002-027.0
Issue date:             2002 June 17
Cross reference:
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1. Problem Description

        The fetchmail email client does not properly limit the maximum
        number of messages available. This allows a remote IMAP server to
        overwrite memory via a message count that exceeds the boundaries
        of an array.


2. Vulnerable Supported Versions

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

        OpenLinux 3.1.1 Server          prior to fetchmail-5.8.17-3.i386.rpm
                                        prior to fetchmailconf-5.8.17-3.i386.rpm

        OpenLinux 3.1.1 Workstation     prior to fetchmail-5.8.17-3.i386.rpm
                                        prior to fetchmailconf-5.8.17-3.i386.rpm

        OpenLinux 3.1 Server            prior to fetchmail-5.8.17-3.i386.rpm
                                        prior to fetchmailconf-5.8.17-3.i386.rpm

        OpenLinux 3.1 Workstation       prior to fetchmail-5.8.17-3.i386.rpm
                                        prior to fetchmailconf-5.8.17-3.i386.rpm


3. Solution

        The proper solution is to install the latest packages.


4. OpenLinux 3.1.1 Server

        4.1 Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Server/current/RPMS

        4.2 Packages

        fe2a12a46105337465eaade27dcdfd19        fetchmail-5.8.17-3.i386.rpm
        5ee700b144f9888d71760c68af7bdd10        fetchmailconf-5.8.17-3.i386.rpm

        4.3 Installation

        rpm -Fvh fetchmail-5.8.17-3.i386.rpm
        rpm -Fvh fetchmailconf-5.8.17-3.i386.rpm

        4.4 Source Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Server/current/SRPMS

        4.5 Source Packages

        d0baecda18a7f2602fe2b1634463addb        fetchmail-5.8.17-3.src.rpm


5. OpenLinux 3.1.1 Workstation

        5.1 Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Workstation/current/RPMS

        5.2 Packages

        e53982b3b4bd650aeca7342b155fd150        fetchmail-5.8.17-3.i386.rpm
        66c50c0b2a80a01e5a6b80ee10b999cb        fetchmailconf-5.8.17-3.i386.rpm

        5.3 Installation

        rpm -Fvh fetchmail-5.8.17-3.i386.rpm
        rpm -Fvh fetchmailconf-5.8.17-3.i386.rpm

        5.4 Source Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1.1/Workstation/current/SRPMS

        5.5 Source Packages

        282f59e2897e214270789b9bd12b1ebe        fetchmail-5.8.17-3.src.rpm


6. OpenLinux 3.1 Server

        6.1 Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/RPMS

        6.2 Packages

        4e1d00de455d83703ef352b6954a26b5        fetchmail-5.8.17-3.i386.rpm
        0d86128975e46e9e739728157e4c8eef        fetchmailconf-5.8.17-3.i386.rpm

        6.3 Installation

        rpm -Fvh fetchmail-5.8.17-3.i386.rpm
        rpm -Fvh fetchmailconf-5.8.17-3.i386.rpm

        6.4 Source Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/SRPMS

        6.5 Source Packages

        94f1a2221da6db44c31f5562a8935b83        fetchmail-5.8.17-3.src.rpm


7. OpenLinux 3.1 Workstation

        7.1 Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/RPMS

        7.2 Packages

        7b6142d18892c4a4afe6a956f3a8ae51        fetchmail-5.8.17-3.i386.rpm
        6ca58cc1462555b90ff4b5c3a395adb8        fetchmailconf-5.8.17-3.i386.rpm

        7.3 Installation

        rpm -Fvh fetchmail-5.8.17-3.i386.rpm
        rpm -Fvh fetchmailconf-5.8.17-3.i386.rpm

        7.4 Source Package Location

        ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/SRPMS

        7.5 Source Packages

        296fb5b80dbd73aefffad24b3998f33c        fetchmail-5.8.17-3.src.rpm


8. References

        Specific references for this advisory:
                http://tuxedo.org/~esr/fetchmail/NEWS
                http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0146

        Caldera security resources:
                http://www.caldera.com/support/security/index.html

        This security fix closes Caldera incidents sr865008, fz521068,
        erg712057.


9. 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.

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