______________________________________________________________________________

                        SuSE Security Announcement

        Package:                mod_php, mod_php4
        Announcement-ID:        SuSE-SA:2002:007
        Date:                   Thursday, Feb 28th 2002 22:00 MET
        Affected SuSE products: SuSE Linux 6.4, 7.0, 7.1, 7.2, 7.3,
                                SuSE Linux Connectivity Server,
                                SuSE Linux Enterprise Server 7
        Vulnerability Type:     remote command execution
        Severity (1-10):        7
        SuSE default package:   no
        Other affected systems: systems running php modules in their webservers
    Content of this advisory:
        1) security vulnerability resolved: mod_php, mod_php4
           problem description, discussion, solution and upgrade information
        2) pending vulnerabilities, solutions, workarounds
        3) standard appendix (further information)

______________________________________________________________________________

1)  problem description, brief discussion, solution, upgrade information

    The e-matters team have found multiple remotely exploitable vulnerabilites
    in the source code responsible for file upload in the apache modules
    mod_php and mod_php4 (versions 3 and 4). The weakness can be used to have
    the webserver execute arbitrary code as supplied by the attacker.

    A temporary workaround against the problem is to disable the file-upload
    support using the file_uploads directive in the php.ini file.

    SuSE Linux versions from 6.4 through 7.1 contained mod_php in versions 3,
    in addition to php4. Starting with SuSE Linux 7.2, all SuSE products do
    not contain the php-3 package any more. We provide fixed packages for both
    major versions of mod_php. We recommend to install the upgrade packages
    as a permanent solution for the problem.

    SuSE Linux versions 7.1 and 7.2 contained a mod_php4 package for the roxen
    http server. If you use the roxen webserver, you should use this package.

    SuSE Linux starting with versions 7.2 have a package called mod_php4-core.
    This package is required for the update of mod_php4 - by consequence,
    you can specify both package filenames in the rpm upgrade command after
    having downloaded the RPM package files.


    To find out which packages to download and install, use the following
    command:

              rpm -qa | grep php

    Select the packages to download according to the output of the command
    above and verify their integrity by the methods listed in section 3) of
    this announcement.
    Then, install the package(s) using the command "rpm -Fhv file.rpm" to
    apply the update. To circumvent problems with package versions depending
    on each other, specify all package filenames that you downloaded on
    the commandline of the rpm command. Example: "rpm -Fhv f1.rpm f2.rpm".

    Our maintenance customers are kindly requested to await the arrival of
    the packages on the maintenance web while these packages are currently
    going through extensive testing. The packages will be available tomorrow
    March 1st. Please use the temporary workaround as described above in the
    meanwhile.


    SPECIAL INSTALL INSTRUCTIONS:
    =============================    After applying the update, the apache webserver should be restarted for
    the update to become effective. To do this, execute the following command
    as root:
        rcapache restart


    i386 Intel Platform:

    SuSE-7.3
      
      57759036006c6e58de18c3aeb45c6026
      
      bf67ea0eae3fad49269513dafb1e9dc6
      
      dfa7414ff43580b499db2e1058f8f433
      
      70734055745db12cd073696801bb483c
    source rpm:
      
      49c999b10542dfca7ef3fa6db821324a

    SuSE-7.2
      
      2aeb974641c749688085073abb172022
      
      dce52a783db7e05e672668797ce8df86
      
      ca56dc95c22e05e01ab80fdf20667ff2
    source rpm:
      
      3bf6894b0ad0d99d895f64383bd0d989

    SuSE-7.1
      
      1e700627bf7f4beffc8ddd2d561a8eb8
      
      ad8683f3499b9a94ddf04cb98d937a9c
      
      5607ebeaae4c6968cc2a303934aa525c
    source rpm:
      
      a8b213fad528434fd0a76ecd6f64efd9
      
      59c902cc181460e76c87d79389ed2ae1

    SuSE-7.0
      
      384ec69cf57d82d879e459369abe0f30
      
      0b8066c5c6708c3591cde686fa0ebd0d
    source rpm:
      
      3a1181820dc0aea8a412ffe78910f939
      
      2236e35cc9d05518f141bb1e1dfcbfa4

    SuSE-6.4
      
      7ed2b7d7df87e243f16d4601fc86ff79
      
      e2d7209f030de57068e8a8137df7fa8b
    source rpm:
      
      f191f6a589cd2f48db315eb13b04905d
      
      f000bd6f629cd3ca1eb1674915bc5e68



    Sparc Platform:

    SuSE-7.3
      
      0e5651dd6388128becbca8253c20c7db
      
      549d42a54c8c7a2248e88020f9462bf1
      
      852e01eea835b08c6a60d749ba7a83fc
      
      0902ffbf72ab0185513169b206c9eb2c
    source rpm:
      
      74ca2271fe120a72b5a8c19ee1c3c91d

    SuSE-7.1
      
      9b4be03a0d859f8e20e135b01cd2bdd6
      
      0f47c53ad5aa143858b384dbd34f6731
    source rpm:
      
      7265b855b566de06fe75548b3e95922c

    SuSE-7.0
      
      14c13b4c207039010216e847823c2eed
      
      2eb8e2bc19bebabfaaf37581fd45ad7b
    source rpm:
      
      c9b771b7166a1bd580ef6c046322329d
      
      7a19250c19bec86b08eb4d8a23418459




    AXP Alpha Platform:

    SuSE-7.1
      
      6f7a7f8df47ee6ac2421667f7db7264d
      
      ac77382743cb67c39293a51cfd9e00b4
      
      9a84772b00b35577a9e1acf1e1ccf38f
    source rpm:
      
      4ef545e1921b8187f7c85bb759534196
      
      3f6ae603df3a5bab9aef46f99f8e61ce

    SuSE-7.0
      
      470bc80f7964b7ad9b92340d4622a9c4
      
      52990c4e82ef33ff2f16589b3cfee842
    source rpm:
      
      13b465f51631bf2fde0b3e4473773779
      
      fa2305309b645a799308a359d1e5b3c9

    SuSE-6.4
      
      4b4bb55d4fd2702ad53825c09cdbf319
      
      d6938494ab74b8ee1436f82ea8f175de
    source rpm:
      
      985240424ec682de27167a01d98f4c25
      
      717466aae064d608c25b9a46e34dbce4




    PPC Power PC Platform:

    SuSE-7.3
      
      3f7efc1ae5a0fa851da916d1cf26bc42
      
      4097f6214718d1c332a6ac8e08228009
      
      41fa3215ff4d52cf05522b6fff232d79
      
      d0e5d095ae725fe170661006b5c62e86
    source rpm:
      
      56af75e705fb13b6bc23acbecbbc886f

    SuSE-7.1
      
      ce51eec29604063b2a50b72ae055981b
      
      a129e7670f7405716bb1a7a10a231f59
    source rpm:
      
      8783a6fcdfe3da9d48cdcf78ee964760

    SuSE-7.0
      
      81580d598dfe9418251d98378da859ac
      
      7b5838375100e20c81aa9a1e553bf0ed
    source rpm:
      
      f4b44b67fe6e57dca79f591f21acfcde
      
      42cdb0304ea6f7ddbfc1ac6a52600316

    SuSE-6.4
      
      faed7151496289390205b2fb446a2c46
      
      c26feb6b96e4f4463b5e3d80cd0e9b0a
    source rpm:
      
      1dcfe695bf1eadd644284731a1a3b7b1
      
      4d67007f9f33d07a061242e822d13dd4

______________________________________________________________________________

2)  Pending vulnerabilities in SuSE Distributions and Workarounds:

  - correction:
    In our last security announcement SuSE-SA:2002:006 (cups), it is advised
    to restart a running instance of cupsd after performing the rpm update
    command to make the package upgrade effective (similar to apache in this
    announcement). The correct command to accomplish a restart of the cups
    daemon is "rccups restart".


  - squid (squid2, squid23, squid-beta packages)
    Malformed   style URLs are not treated safely in all squid
    packages. Our packages are available for most architectures and
    distributions from our ftp server at the usual location, but the security
    announcement is waiting for the last packages to complete building and
    testing.


  - ucdsnmpd
    The UCD snmpd contains a variety of security related bugs.
    The SuSE Security Team have been reviewing the code and the available
    fixes to ensure that all problems get fixed. The update packages are
    available at the usual location, but the security announcement is
    waiting for the last packages to complete building and testing.
    Regardless of whether you use the fixed or the unfixed packages, it is
    it is strongly recommended to filter SNMP (TCP and UDP packets with
    destination to port 161) traffic on your inbound router(s).


  - ssh/openssh
    Rumours are spreading that there is a new security breach in
    implementations of secure shell (ssh). The two implementations shipped
    with SuSE products have been fixed to our best knowlege, and we are not
    aware of any security holes in these packages.
    SuSE Security are investigating this issue and will report any
    vulnerability found through our announcement list
    suse-security-announce@suse.com (subscription information in section 3
    of this security announcement).

______________________________________________________________________________

3)  standard appendix: authenticity verification, additional information

  - Package authenticity verification:

    SuSE update packages are available on many mirror ftp servers all over
    the world. While this service is being considered valuable and important
    to the free and open source software community, many users wish to be
    sure about the origin of the package and its content before installing
    the package. There are two verification methods that can be used
    independently from each other to prove the authenticity of a downloaded
    file or rpm package:
    1) md5sums as provided in the (cryptographically signed) announcement.
    2) using the internal gpg signatures of the rpm package.

    1) execute the command
        md5sum 
       after you downloaded the file from a SuSE ftp server or its mirrors.
       Then, compare the resulting md5sum with the one that is listed in the
       announcement. Since the announcement containing the checksums is
       cryptographically signed (usually using the key security@suse.de),
       the checksums show proof of the authenticity of the package.
       We disrecommend to subscribe to security lists which cause the
       email message containing the announcement to be modified so that
       the signature does not match after transport through the mailing
       list software.
       Downsides: You must be able to verify the authenticity of the
       announcement in the first place. If RPM packages are being rebuilt
       and a new version of a package is published on the ftp server, all
       md5 sums for the files are useless.

    2) rpm package signatures provide an easy way to verify the authenticity
       of an rpm package. Use the command
        rpm -v --checksig 
       to verify the signature of the package, where  is the
       filename of the rpm package that you have downloaded. Of course,
       package authenticity verification can only target an uninstalled rpm
       package file.
       Prerequisites:
        a) gpg is installed
        b) The package is signed using a certain key. The public part of this
           key must be installed by the gpg program in the directory
           ~/.gnupg/ under the user's home directory who performs the
           signature verification (usually root). You can import the key
           that is used by SuSE in rpm packages for SuSE Linux by saving
           this announcement to a file ("announcement.txt") and
           running the command (do "su -" to be root):
            gpg --batch; gpg < announcement.txt | gpg --import
           SuSE Linux distributions version 7.1 and thereafter install the
           key "build@suse.de" upon installation or upgrade, provided that
           the package gpg is installed. The file containing the public key
           is placed at the toplevel directory of the first CD (pubring.gpg)
           and at   .


  - SuSE runs two security mailing lists to which any interested party may
    subscribe:

    suse-security@suse.com
        -   general/linux/SuSE security discussion.
            All SuSE security announcements are sent to this list.
            To subscribe, send an email to
                <suse-security-subscribe@suse.com>.

    suse-security-announce@suse.com
        -   SuSE's announce-only mailing list.
            Only SuSE's security annoucements are sent to this list.
            To subscribe, send an email to
                <suse-security-announce-subscribe@suse.com>.

    For general information or the frequently asked questions (faq)
    send mail to:
        <suse-security-info@suse.com> or
        <suse-security-faq@suse.com> respectively.

    ====================================================================    SuSE's security contact is <security@suse.com> or <security@suse.de>.
    The <security@suse.de> public key is listed below.
    ====================================================================______________________________________________________________________________

    The information in this advisory may be distributed or reproduced,
    provided that the advisory is not modified in any way. In particular,
    it is desired that the cleartext signature shows proof of the
    authenticity of the text.
    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  2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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Roman Drahtmüller,
SuSE Security.
--
 -                                                                      -
| Roman Drahtmüller      <draht@suse.de> // "You don't need eyes to see, |
  SuSE GmbH - Security           Phone: //             you need vision!"
| Nürnberg, Germany     +49-911-740530 //           Maxi Jazz, Faithless |
 -                                                                      -