SuSE: 'apache' vulnerabilities.

    Date07 Sep 2000
    CategorySuSE
    2332
    Posted ByLinuxSecurity Advisories
    The configuration file for apache contains two security relevant errors.
    -----BEGIN PGP SIGNED MESSAGE-----
    
    ______________________________________________________________________________
    
                            SuSE Security Announcement
    
            Package:                apache
            Date:                   Thursday, September 7th, 2000 20:00 MEST
            Affected SuSE versions: 6.1, 6.2, 6.3, 6.4, 7.0
            Vulnerability Type:     remote file viewing
            Severity (1-10):        2
            SuSE default package:   yes
            Other affected systems: none, as of the release date of this advisory
    
        Content of this advisory:
            1) security vulnerability resolved: apache
               problem description, discussion, solution and upgrade information
            2) credits: @stake
            3) standard appendix (further information)
    
    
    ______________________________________________________________________________
    
    1)  problem description, brief discussion, solution, upgrade information
    
        The default package selection in SuSE distributions includes apache.
        The configuration file that comes with the package contains two
        security relevant errors:
    
        a) Starting in SuSE-6.0, a section in apache's configuration file
        /etc/httpd/httpd.conf reads
            Alias /cgi-bin-sdb/ /usr/local/httpd/cgi-bin/
        This allows remote users to read the cgi script sources of the server,
        located in /usr/local/httpd/cgi-bin/.
    
        b) Starting with SuSE-6.3, the distribution comes with the apache module
        WebDAV. It is contained in a seperate package, named mod_dav, and it
        is installed if selected by hand or if a network server configuration
        has been selected in the installation process. mod_dav is not contained
        in the default package selection. WebDAV stands for "Web-based
        Distributed Authoring and Versioning" and allows users to
        collaboratively edit and manage files on remote web servers (see
         http://www.webdav.org/ for further details!).
        If WebDAV is installed, apache will automatically run with the module
        activated. Opposing the recommendations on the WebDAV homepage under
         http://www.webdav.org/mod_dav/#security, there is no access control or
        authentification activated. This should most definitely be considered
        a security problem.
        The overall policy wrt activating an installed package will adopt to this
        conclusion in future releases of the SuSE Linux distribution.
    
        Problem a) and b) can be easily solved by changing the relevant parts
        of apache's configuration file /etc/httpd/httpd.conf:
    
        a) Change "Alias /cgi-bin-sdb/ /usr/local/httpd/cgi-bin/" to read:
            "ScriptAlias /cgi-bin-sdb/ /usr/local/httpd/cgi-bin/"
        Then, restart apache: `/sbin/init.d/apache restart'
    
        b) Change "DAV On" to read: "DAV Off". This removes the problem,
        regardless of the package being installed or not. Alternatively,
        you may wish to remove the mod_dav package using the command
        `rpm -e mod_dav'.
        Then, restart apache: `/sbin/init.d/apache restart'
    
        SuSE strongly recommends to have these changes applied as soon as
        possible. In addition, SuSE provides an update for the vulnerable
        misconfigured packages for the case that the admin of a SuSE Linux
        machine did not change the configuration file yet.
    
        Download the update package from locations desribed below and install
        the package with the command `rpm -Fhv file.rpm'. The md5sum for each
        file is in the line below. You can verify the integrity of the rpm
        files using the command
            `rpm --checksig --nogpg file.rpm',
        independently from the md5 signatures below.
    
    
        i386 Intel Platform:
    
        SuSE-7.0
         ftp://ftp.suse.com/pub/suse/i386/update/7.0/n1/apache-1.3.12-107.i386.rpm
          65bac933de7676ad3d8f63b32c608dad
        source rpm:
         ftp://ftp.suse.com/pub/suse/i386/update/7.0/zq1/apache-1.3.12-107.nosrc.rpm
          5b0f9ce9b5e2c3a45356fcd9cdff07ba
    
        SuSE-6.4
         ftp://ftp.suse.com/pub/suse/i386/update/6.4/n1/apache-1.3.12-107.i386.rpm
          a4bea77974c9d300ac13698e6f9812eb
        source rpm:
         ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/apache-1.3.12-107.nosrc.rpm
          39cf311c44bc760159c711c7ec97685f
    
        SuSE-6.3
         ftp://ftp.suse.com/pub/suse/i386/update/6.3/n1/apache-1.3.9-70.i386.rpm
          87d7a6426857e6f3afcf991c273fc1a5
        source rpm:
         ftp://ftp.suse.com/pub/suse/i386/update/6.3/zq1/apache-1.3.9-70.nosrc.rpm
          ab81b76d0c4e6c765b77a69fd4143620
    
        SuSE-6.2
         ftp://ftp.suse.com/pub/suse/i386/update/6.2/n1/apache-1.3.6-52.i386.rpm
          d7c513bb4aad15a9f3dfb11ff1302405
        source rpm:
         ftp://ftp.suse.com/pub/suse/i386/update/6.2/zq1/apache-1.3.6-52.nosrc.rpm
          bdabbdf7df648c3b4b8c5fd031e65cfc
    
        SuSE-6.1
         ftp://ftp.suse.com/pub/suse/i386/update/6.1/n1/apache-1.3.6-53.i386.rpm
          db40e37d1931fb4e5830358b37acee5e
        source rpm:
         ftp://ftp.suse.com/pub/suse/i386/update/6.1/zq1/apache-1.3.6-53.nosrc.rpm
          8ad785cb5f16456b8540982f1175b0b0
    
        SuSE-6.0
        Please use the update packages from the 6.1 directory for SuSE-6.0!
    
    
        Sparc Platform:
    
        SuSE-7.0
         ftp://ftp.suse.com/pub/suse/sparc/update/7.0/n1/apache-1.3.12-109.sparc.rpm
          66f87cb2100960ee72ae1110fa077424
        source rpm:
       
         ftp://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/apache-1.3.12-109.nosrc.rpm
          fff4bd1d37a7e9d430e8a60898865567
    
    
        AXP Alpha Platform:
    
        SuSE-6.4
        The update packages will be available soon at the usual location
         ftp://ftp.suse.com/pub/suse/axp/update/6.4/n1/ .
        Until then, please correct the configuration file by hand as
        described above.
    
        SuSE-6.3
        The update packages will be available soon at the usual location
         ftp://ftp.suse.com/pub/suse/axp/update/6.3/n1/ .
        Until then, please correct the configuration file by hand as
        described above.
    
        SuSE-6.1
         ftp://ftp.suse.com/pub/suse/axp/update/6.1/n1/apache-1.3.6-43.alpha.rpm
          eaca8f06c54c669d60f6a06fbe7301dc
        source rpm:
         ftp://ftp.suse.com/pub/suse/axp/update/6.1/zq1/apache-1.3.6-43.nosrc.rpm
          2227de2e6d5faf268413cd474175d126
    
        PPC Power PC Platform:
    
        SuSE-6.4
         ftp://ftp.suse.com/pub/suse/ppc/update/6.4/n1/apache-1.3.12-108.ppc.rpm
          0c830d4d33f2bac33d6a44ab0efc34e7
        source rpm:
         ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/apache-1.3.12-108.nosrc.rpm
          f5fd7575d67e369f87fb2e5c47b61eaf
    
        SuSE-6.3
        The update packages will be available soon at the usual location
         ftp://ftp.suse.com/pub/suse/ppc/update/6.3/n1/ .
        Until then, please correct the configuration file by hand as
        described above.
    
    ______________________________________________________________________________
    
    2)  Credits:
    
        SuSE would like to express its sincere appreciation for the efforts
        and the working style of the Cerberus Security Team/@Stake Inc., in
        particular to mnemonix (David Litchfield <This email address is being protected from spambots. You need JavaScript enabled to view it.>)
        and to weld <This email address is being protected from spambots. You need JavaScript enabled to view it.>.
        Have a look at their website at  http://www.atstake.com/ for further
        information.
    ______________________________________________________________________________
    
    3)  standard appendix:
    
        SuSE runs two security mailing lists to which any interested party may
        subscribe:
    
        This email address is being protected from spambots. You need JavaScript enabled to view it.
            -   general/linux/SuSE security discussion.
                All SuSE security announcements are sent to this list.
                To subscribe, send an email to
                    <This email address is being protected from spambots. You need JavaScript enabled to view it.>.
    
        This email address is being protected from spambots. You need JavaScript enabled to view it.
            -   SuSE's announce-only mailing list.
                Only SuSE's security annoucements are sent to this list.
                To subscribe, send an email to
                    <This email address is being protected from spambots. You need JavaScript enabled to view it.>.
    
        For general information or the frequently asked questions (faq)
        send mail to:
            <This email address is being protected from spambots. You need JavaScript enabled to view it.> or
            <This email address is being protected from spambots. You need JavaScript enabled to view it.> respectively.
    
        ===============================================
        SuSE's security contact is <This email address is being protected from spambots. You need JavaScript enabled to view it.>.
        ===============================================
    
    Regards,
    Roman Drahtmüller.
    - - --
     -                                                                      -
    | Roman Drahtmüller      <This email address is being protected from spambots. You need JavaScript enabled to view it.> //          "Caution: Cape does |
      SuSE GmbH - Security           Phone: //       not enable user to fly."
    | Nürnberg, Germany     +49-911-740530 // (Batman Costume warning label) |
     -                                                                      -
    ______________________________________________________________________________
    
        The information in this advisory may be distributed or reproduced,
        provided that the advisory is not modified in any way.
        SuSE GmbH makes no warranties of any kind whatsoever with respect
        to the information contained in this security advisory.
    
    Type Bits/KeyID    Date       User ID
    pub  2048/3D25D3D9 1999/03/06 SuSE Security Team <This email address is being protected from spambots. You need JavaScript enabled to view it.>
    
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