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SUSE Security Announcement - openssl
-----BEGIN PGP SIGNED MESSAGE----- 


______________________________________________________________________________ 


                        SuSE Security Announcement 


        Package: openssl 
        Announcement-ID: SuSE-SA:2002:027 
        Date: Tuesday, Jul 30th 2002 19:00 MEST 
        Affected products: 7.0, 7.1, 7.2, 7.3, 8.0 
                                SuSE Linux Database Server, 
                                SuSE eMail Server 3.1, 
                                SuSE Linux Enterprise Server, 
                                SuSE Linux Firewall on CD, 
                                SuSE Linux Connectivity Server 
                                SuSE Linux Office Server 
        Vulnerability Type: remote command execution 
        Severity (1-10): 8 
        SuSE default package: yes 
        Cross References: CAN-2002-0656, CAN-2002-0657, CAN-2002-0655, 
                                CERT Advisory CA-2002-23 



    Content of this advisory: 
        1) security vulnerability resolved: openssl 
           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 openssl package provides encryption functions and is used by many 
    applications on SuSE products. 


    Several buffer overflows have been discovered in the OpenSSL library 
    affecting the SSL implementation, as well as a signedness issue 
    in the ASN.1 decoding routines. 


    In the SSL library, various blobs of data passed from the client to 
    the server or vice versa were being copied to local buffers without 
    checking their size. At least one overflow in the SSLv2 server code can 
    be exploited by an attacker to gain access to the account under which 
    the SSL enabled service is running. The other overflows happen in the 
    SSL client code. 
    The impact of this bug depends on the service using SSL. When attacking 
    the Apache HTTP server with mod_ssl enabled, the perpetrator could gain 
    access to the account "wwwrun". Attacking other services, such as the 
    OpenLDAP slapd server, could even give the attacker access to the system's 
    root account. 


    Temporary workarounds for affected services include to disable the ssl 
    functionality where this is possible. For ssl-enabled webservers, it is 
    possible to temporarily disable SSLv2: Edit /etc/httpd/httpd.conf and 
    add the following line to the mod_ssl configuration group: 


        SSLProtocols all -SSLv2 


    This should be considered a temporary workaround only. 


    Since the SSL client implementation is affected as well, and due to the 
    potential impact of the ASN.1 signedness issues, we recommend that users 
    who do not run SSL enabled services upgrade their openssl package as well. 
    By consequence, we recommend all users to update their openssl package. 



    Please download the update package for your distribution and verify its 
    integrity by the methods listed in section 3) of this announcement. 
    Then, install the package using the command "rpm -Fhv file.rpm" to apply 
    the update. 
    Our maintenance customers are being notified individually. The packages 
    are being offered to install from the maintenance web. 


    SPECIAL INSTALL INSTRUCTIONS: 
    ============================== 
    After performing the package update, all services using the openssl 
    libraries must be restarted for the update to become effective. 
    This can be done by rebooting the server or by individually restarting 
    the services in question manually. To find out which services use the 
    openssl libraries, use the command 


        fuser -v /usr/lib/libssl.so* /usr/lib/libcrypto.so* 


    The ASN1 parser vulnerability was discovered by Adi Stav and James Yonan 
    independently. 
    We would like to express our gratitude to the openssl team for 
    their work on the package and the fix for the vulnerability. 





    Intel i386 Platform: 


    SuSE-8.0: 
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec1/openssl-0.9.6c-78.i386.rpm 
      d68e8d7b95c8e08a26e8c43f8402dd9e 
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/d3/openssl-devel-0.9.6c-78.i386.rpm 
      585843303f70fd248d7246255df67b04 
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/doc4/openssl-doc-0.9.6c-78.i386.rpm 
      26a7ccff8ed167f6b75e8fe3fa8dd9f6 
    source rpm(s): 
    ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/openssl-0.9.6c-78.src.rpm 
      f79da5c72786b565d3c974bc3c99fd96 


    SuSE-7.3: 
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec1/openssl-0.9.6b-147.i386.rpm 
      d561da0a81b4c2672489af60c5dd8370 
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/d2/openssl-devel-0.9.6b-147.i386.rpm

      9a1bab09eeb257ac3431b3f59c7b6505 
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/doc3/openssl-doc-0.9.6b-147.i386.rpm

      f7c835278bec7df2efd630ba3c3c813f 
    source rpm(s): 
    ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/openssl-0.9.6b-147.src.rpm 
      2dc2b9e91159b9f31becb9e60b089216 


    SuSE-7.2: 
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec1/openssl-0.9.6a-63.i386.rpm 
      1e4e8c964ad7a199c79e01aab3df2f6f 
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/d2/openssl-devel-0.9.6a-63.i386.rpm 
      e8e751d8c712956a57285fb85a14c390 
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/doc3/openssl-doc-0.9.6a-63.i386.rpm 
      70ac1f005f8480a25b7ee5ef94e61582 
    source rpm(s): 
    ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/openssl-0.9.6a-63.src.rpm 
      da7631d06555e889fd21b36b521488c1 


    SuSE-7.1: 
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/sec1/openssl-0.9.6a-63.i386.rpm 
      4d77c7121cc5e917ef1e2d3a6cfa3e02 
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/d2/openssl-devel-0.9.6a-63.i386.rpm 
      ab1e29c72446bf452ec35ba033aa0411 
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/doc3/openssl-doc-0.9.6a-63.i386.rpm 
      0c1715237824236ce88011e9d63b16c0 
    source rpm(s): 
    ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/openssl-0.9.6a-63.src.rpm 
      4300e98769f3e4743524b84c5d917148 


    SuSE-7.0: 
    ftp://ftp.suse.de/pub/suse/i386/update/7.0/sec1/openssl-0.9.5a-59.i386.rpm 
      609999f72998db65d514619271058c97 
    source rpm(s): 
    ftp://ftp.suse.de/pub/suse/i386/update/7.0/zq1/openssl-0.9.5a-59.src.rpm 
      313bc5e55757dc36414d3962306fa1b8 




    Sparc Platform: 


    The packages for the Sparc platform are being built by the time of the 
    writing of this announcement and will be published without any delay. 





    AXP Alpha Platform: 


    The packages for the Alpha platform are being built by the time of the 
    writing of this announcement and will be published without any delay. 





    PPC Power PC Platform: 


    SuSE-7.3: 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec1/openssl-0.9.6b-136.ppc.rpm 
      13c3473cea153733d903c7bc787f2570 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/d2/openssl-devel-0.9.6b-136.ppc.rpm 
      9d7dc120b55d29df6cb94c0930dfda1c 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/doc3/openssl-doc-0.9.6b-136.ppc.rpm 
      29f3db701df227c5f06de28b681c49dc 
    source rpm(s): 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/openssl-0.9.6b-136.src.rpm 
      deedc21663128548d830bf9c24c70add 


    SuSE-7.1: 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/sec1/openssl-0.9.6a-23.ppc.rpm 
      c7342fc2aced5e38c4cea73bc9012715 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/d2/openssl-devel-0.9.6a-23.ppc.rpm 
      ea0bc83b56fc373734aed4314a52babb 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/doc3/openssl-doc-0.9.6a-23.ppc.rpm 
      33db969774904ce36a4d79a69af4c85a 
    source rpm(s): 
    ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/openssl-0.9.6a-23.src.rpm 
      f0c1fc2a70e453731d19378f8f1ba351 


    SuSE-7.0: 
    ftp://ftp.suse.de/pub/suse/ppc/update/7.0/sec1/openssl-0.9.5a-8.ppc.rpm 
      0b839d3c13e0250eeb16728ba2ed2354 
    source rpm(s): 
    ftp://ftp.suse.de/pub/suse/ppc/update/7.0/zq1/openssl-0.9.5a-8.src.rpm 
      e2837b523654fc7ac73c1b94e2627c60 




______________________________________________________________________________ 


2) Pending vulnerabilities in SuSE Distributions and Workarounds: 


  - chfn/util-linux 
    Linux distributors have published security announcements about password 
    locking race conditions that lead to a local root vulnerability. 
    SuSE products are not affected by this weakness because we use the 
    user/group management utilities from the shadow package. These utilities 
    are not affected. 


  - mod_ssl 
    An off-by-one buffer overflow in the mod_ssl apache module is subject to 
    an upcoming SuSE Security announcement, following this announcement. 
    The upcoming announcement also treats a temporary file handling problem 
    that has been discovered by Markus Meissner and Sebastian Krahmer, 
    SuSE Security. 


  - libpng 
    libpng is a library that provides functions for applications to handle 
    PNG image files (Portable Network Graphics). An overflow vulnerability 
    has been found in the libpng library that may make it possible for an 
    attacker to run arbitrary code or to crash an application that uses 
    the libpng library if the application in question opens a png image file. 
    We are in the process of fixing this vulnerability. 


  - wwwoffle (World Wide Web Offline Explorer) 
    wwwoffle fails to handle negative Content-Length values correctly. 
    It is believed that an attacker can exploit this bug to gain remote 
    access to the system running wwwoffle. 
    We are working on update packages against this problem. 


  - mod_php4-4.2* 
    Security vulnerabilities have been found in php versions 4.2.0 and 4.2.1. 
    SuSE systems are not affected because these systems use older versions 
    of the php package. 


  - The SuSE Linux 6.4 distribution has been announced to be discontinued 
    in June. We have now moved the update directories for all architectures 
    to the discontinued directory on our ftp server to indicate that no more 
    updates will be made for this distribution. 


______________________________________________________________________________ 


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 <name-of-the-file.rpm> 
       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 <file.rpm> 
       to verify the signature of the package, where <file.rpm> is the 
       filename of the rpm package that you have downloaded. Of course, 
       package authenticity verification can only target an un-installed 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 top-level directory of the first CD (pubring.gpg) 
           and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . 



  - 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 announcements 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 clear-text signature shows proof of the 
    authenticity of the text. 
    SuSE Linux AG 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 <draht@suse.de> // "You don't need eyes to see, | 
  SuSE Linux AG - Security Phone: // you need vision!" 
| Nürnberg, Germany +49-911-740530 // Maxi Jazz, Faithless | 
 - - 


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Spotlight

Operation Pawn Storm: Varied targets and attack vectors, next-level spear-phishing tactics

Posted on 23 October 2014.  |  Targets of the spear phishing emails included staff at the Ministry of Defense in France, in the Vatican Embassy in Iraq, military officials from a number of countries, and more.


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