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______________________________________________________________________________



                        SuSE Security Announcement



        Package:                syslogd/klogd

        Date:                   Wednesday, September 20th, 2000 03:00 MEST

        Affected SuSE versions: 6.1 6.2, 6.3, 6.4, 7.0

        Vulnerability Type:     local DoS, possible root compromise

        Severity (1-10):        5

        SuSE default package:   yes

        Other affected systems: Linux systems, possibly unix systems



    Content of this advisory:

        1) security vulnerability resolved: syslogd/klogd

           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 syslogd package consists of two daemons that are being launched upon

    system startup: klogd and syslogd. The former collects kernel messages

    and passes them on to the syslog(3) facility. syslogd will pick up the

    logging messages and write them to the logfiles as specified by the

    syslogd configuration file /etc/syslog.conf. Errors in both the klogd

    and the syslogd can cause both daemons do die when specially designed

    strings get passed to the kernel by the user, eg. with a malformed

    structure in a system call. These errors have been discovered by Jouko

    Pynnönen, Solar Designer, a fix for one of the bugs has been provided

    by Daniel Jacobowitz.



    There is currently no known way to exploit these bugs with an

    effect other than a DoS (Denial of Service) of the syslog/klog service.

    Since it may be possible to execute arbitrary code as a result of a

    buffer overflow, administrators should consider applying the patches

    as soon as possible. Also, logging messages resulting from firewall

    rules in the kernel can get lost if the daemon does not pick them up.

    Efficient temporary countermeasures against these attacks other than

    package upgrade do not exist.



    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

    http://ftp.suse.com/pub/suse/i386/update/7.0/a1/syslogd-1.3.33-161.i386.rpm

      284b1975cda65cd6ed5ce65672706e19

    source rpm:

    http://ftp.suse.com/pub/suse/i386/update/7.0/zq1/syslogd-1.3.33-161.src.rpm

      49c7a171753171f4e6fd772453d46a93



    SuSE-6.4

    http://ftp.suse.com/pub/suse/i386/update/6.4/a1/syslogd-1.3.33-161.i386.rpm

      cb89ed419b0c9dbf7c66191a58606920

    source rpm:

    http://ftp.suse.com/pub/suse/i386/update/6.4/zq1/syslogd-1.3.33-161.src.rpm

      33686198aa6412401b0056241829aae0



    SuSE-6.3

    http://ftp.suse.com/pub/suse/i386/update/6.3/a1/syslogd-1.3.33-161.i386.rpm

      af5e43976fb9814e1f5d626e16c2d176

    source rpm:

    http://ftp.suse.com/pub/suse/i386/update/6.3/zq1/syslogd-1.3.33-161.src.rpm

      1e821f6fda1f471d36e9b4990aa496b4



    SuSE-6.2

    http://ftp.suse.com/pub/suse/i386/update/6.2/a1/syslogd-1.3.33-9.i386.rpm

      fc29df9455288f40eb1e8dbd0f47d5b3

    source rpm:

    http://ftp.suse.com/pub/suse/i386/update/6.2/zq1/syslogd-1.3.33-9.src.rpm

      ae980989a754e6bf85de9dd60676b321



    SuSE-6.1

    http://ftp.suse.com/pub/suse/i386/update/6.1/a1/syslogd-1.3.33-161.i386.rpm

      c8d23ec6c3a9f944c15d6e12ffebc66f

    source rpm:

    http://ftp.suse.com/pub/suse/i386/update/6.1/zq1/syslogd-1.3.33-161.src.rpm

      b0329c20caf1d1d427da9961240732f5



    SuSE-5.3

    http://ftp.suse.com/pub/suse/i386/update/5.3/a1/syslogd-1.3.33-9.i386.rpm

      3104e26a8b474e215ed703b7c4d48888

    source rpm:

    http://ftp.suse.com/pub/suse/i386/update/5.3/zq1/syslogd-1.3.33-9.src.rpm

      09c9539df1c4225d2366a2a860b01dbb





    Sparc Platform:



    SuSE-7.0

    http://ftp.suse.com/pub/suse/sparc/update/7.0/a1/syslogd-1.3.33-161.sparc.rpm

      38bb40e8bdfd55387f0e25407d4e5cbd

    source rpm:

    http://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/syslogd-1.3.33-161.src.rpm

      2017cbca57305092c0a912b77c2411dd







    AXP Alpha Platform:



    SuSE-6.4

    http://ftp.suse.com/pub/suse/axp/update/6.4/a1/syslogd-1.3.33-162.alpha.rpm

      419ea3172f4532f77c4fc5907de345f2

    source rpm:

    http://ftp.suse.com/pub/suse/axp/update/6.4/zq1/syslogd-1.3.33-162.src.rpm

      44cb992c94dffff0d31b65a0938fc1cc



    SuSE-6.3

    http://ftp.suse.com/pub/suse/axp/update/6.3/a1/syslogd-1.3.33-161.alpha.rpm

      84cfb8fa2e471baadf96eae1d3be1d0a

    source rpm:

    http://ftp.suse.com/pub/suse/axp/update/6.3/zq1/syslogd-1.3.33-161.src.rpm

      23ee4562c993de6943cead4878e73259



    SuSE-6.1

    http://ftp.suse.com/pub/suse/axp/update/6.1/a1/syslogd-1.3.33-161.alpha.rpm

      3b04489436b536d3d2e4b4bec6bc5ced

    source rpm:

    http://ftp.suse.com/pub/suse/axp/update/6.1/zq1/syslogd-1.3.33-161.src.rpm

      ab7edad2685d8d820b0f72b470048e81





    PPC Power PC Platform:



    SuSE-6.4

    http://ftp.suse.com/pub/suse/ppc/update/6.4/a1/syslogd-1.3.33-161.ppc.rpm

      9d588d1d4614d173b60746ae74fc6046

    source rpm:

    http://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/syslogd-1.3.33-161.src.rpm

      eae3b0cd9b7de4ded453e9151b722b0e

______________________________________________________________________________



2)  Pending vulnerabilities in SuSE Distributions and Workarounds:



    This is the updated list of currently known security problems. Other

    problems such as the one from the subject of this advisory have passed

    these vulnerabilities due to greater severity.



     - esound, xchat, gnorpm, xpdf



        These packages are known to exhibit file race conditions. We will

        provide update packages soon.



     - pine



        The pine Mail User Agent may crash when it encounters a specially

        crafted header line in an email. Again, we're working on a patch.



______________________________________________________________________________



3)  standard appendix:



    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-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

                .



    For general information or the frequently asked questions (faq)

    send mail to:

         or

         respectively.



    ===============================================

    SuSE's security contact is .

    ===============================================



Regards,

Roman Drahtmüller.

- - --

 -                                                                      -

| Roman Drahtmüller       //          "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 



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