OSEC

Neohapsis is currently accepting applications for employment. For more information, please visit our website www.neohapsis.com or email hr@neohapsis.com
 
From: Sebastian Krahmer (krahmersuse.de)
Date: Mon Apr 29 2002 - 07:32:48 CDT

  • Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

    -----BEGIN PGP SIGNED MESSAGE-----

    ______________________________________________________________________________

                            SuSE Security Announcement

            Package: radiusd-cistron
            Announcement-ID: SuSE-SA:2002:013
            Date: Mon Apr 29 13:00:00 CEST 2002
            Affected products: 6.4, 7.0, 7.1, 7.2, 7.3,
                                    Enterprise Server 7
            Vulnerability Type: remote command execution
            Severity (1-10): 7
            SuSE default package: No
            Other affected systems: Various radius clients and servers.

        Content of this advisory:
            1) security vulnerability resolved: digest calculation buffer overflow,
               invalid attribute length calculation
               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 radius daemon as shipped with the radiusd-cistron package is
        responsible for the RADIUS authentication service in networks and therefore
        considered a security critical application.
            ZARAZA reported security releated bugs in various radius server and
        client software. The list of vulnerable servers includes the cistron radius
        package. Within the cistron package, a buffer overflow in the digest
        calculation function and miscalculations of attribute lengths have been
        fixed which could allow remote attackers to execute arbitrary commands on
        the system running the radius server. Beside the cistron radius package the
        following radius packages have been vulnerable to the same attacks and have
        been fixed: freeradius, radiusclient and livingston-radius.
            The only workaround for this bug is to disable the radius-server until
        the new packages have been installed.

        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.

        Once you successfully updated your radius packages, make sure you restart
        the radius server by issuing the following command as root:

            "/etc/rc.d/radiusd restart"

        "/etc/rc.d/radiusd" automatically invokes the correct radius-server which
        is part of either the cistron, livingston or freeradius package.

        i386 Intel Platform:

        SuSE-7.3
        ftp://ftp.suse.com/pub/suse/i386/update/7.3/n3/radiusd-cistron-1.6.4-168.i386.rpm
          8215e7113e8937844ab5d2deba8bbb13
        source rpm:
        ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/radiusd-cistron-1.6.4-168.src.rpm
          978edf49cf7fa28c5e872bc48ba504ab

        SuSE-7.2
        ftp://ftp.suse.com/pub/suse/i386/update/7.2/n3/radiusd-cistron-1.6.4-167.i386.rpm
          964904ef67f81b2d19f1c8ef2ccc6f61
        source rpm:
        ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/radiusd-cistron-1.6.4-167.src.rpm
          6ffd720c4ceb0e0c6d22446178d8bf11

        SuSE-7.1
        ftp://ftp.suse.com/pub/suse/i386/update/7.1/n3/radiusd-cistron-1.6.4-168.i386.rpm
          52ec1da0c4b750fe63d506713ff56c5e
        source rpm:
        ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/radiusd-cistron-1.6.4-168.src.rpm
          6d34cc16bf9adcc93eac095570f49748

        SuSE-7.0
        ftp://ftp.suse.com/pub/suse/i386/update/7.0/n2/cistron-1.6.3-76.i386.rpm
          52a9b0c7fcbd45973db6508d155edf21
        source rpm:
        ftp://ftp.suse.com/pub/suse/i386/update/7.0/zq1/cistron-1.6.3-76.src.rpm
          a22a646d5f04dd853906db9cc465f14a

        SuSE-6.4
        ftp://ftp.suse.com/pub/suse/i386/update/6.4/n2/cistron-1.6.2-25.i386.rpm
          bed8804bf53822d7f7bcdd54f00a9d89
        source rpm:
        ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/cistron-1.6.2-25.src.rpm
          b47877d68465e895fe899da9ba89709d

        Sparc Platform:

        SuSE-7.3
        ftp://ftp.suse.com/pub/suse/sparc/update/7.3/n3/radiusd-cistron-1.6.4-65.sparc.rpm
          3230120f925437fd36b648991a3b4851
        source rpm:
        ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/radiusd-cistron-1.6.4-65.src.rpm
          713f6f1f7fe4c2987a52b12df6ef2c4a

        SuSE-7.1
        ftp://ftp.suse.com/pub/suse/sparc/update/7.1/n3/radiusd-cistron-1.6.4-65.sparc.rpm
          d444432bd863523992620401311f948b
        source rpm:
        ftp://ftp.suse.com/pub/suse/sparc/update/7.1/zq1/radiusd-cistron-1.6.4-65.src.rpm
          ff7a7f432a0a32fbed31a6ee680d5118

        SuSE-7.0
        ftp://ftp.suse.com/pub/suse/sparc/update/7.0/n2/cistron-1.6.3-4.sparc.rpm
          69ee7178a0312685a169386180cd5e9e
        source rpm:
        ftp://ftp.suse.com/pub/suse/sparc/update/7.0/zq1/cistron-1.6.3-4.src.rpm
          71632b60b9b2bee4df06f940088b0ab6

        AXP Alpha Platform:

        SuSE-7.1
        ftp://ftp.suse.com/pub/suse/axp/update/7.1/n3/radiusd-cistron-1.6.4-69.alpha.rpm
          323032020d8c82724b12904db456c135
        source rpm:
        ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/radiusd-cistron-1.6.4-69.src.rpm
          7440831ddb1e394ac6595e9e5bebbff1

        SuSE-7.0
        ftp://ftp.suse.com/pub/suse/axp/update/7.0/n2/cistron-1.6.3-8.alpha.rpm
          4deb36542c3a76a9246618abcd656d96
        source rpm:
        ftp://ftp.suse.com/pub/suse/axp/update/7.0/zq1/cistron-1.6.3-8.src.rpm
          77c3cfe8cb64d7c2cd59b81e0e1e26ea

        SuSE-6.4
        ftp://ftp.suse.com/pub/suse/axp/update/6.4/n2/cistron-1.6.2-20.alpha.rpm
          0c39bec71f6671c55b46ed627f2830d9
        source rpm:
        ftp://ftp.suse.com/pub/suse/axp/update/6.4/zq1/cistron-1.6.2-20.src.rpm
          8783c9b8f519a1623bf6df52a8878ab0

        PPC Power PC Platform:

        SuSE-7.3
        ftp://ftp.suse.com/pub/suse/ppc/update/7.3/n3/radiusd-cistron-1.6.4-95.ppc.rpm
          a541869da6cfa45822887dc69f7730f8
        source rpm:
        ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/radiusd-cistron-1.6.4-95.src.rpm
          da491549cda05ead01d2dd0519f14eeb

        SuSE-7.1
        ftp://ftp.suse.com/pub/suse/ppc/update/7.1/n3/radiusd-cistron-1.6.4-95.ppc.rpm
          998f87b937ec36e55ee0151f82a071fa
        source rpm:
        ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/radiusd-cistron-1.6.4-95.src.rpm
          ebb96d0b9b5093a5324c90743f7a69a3

        SuSE-7.0
        ftp://ftp.suse.com/pub/suse/ppc/update/7.0/n2/cistron-1.6.3-85.ppc.rpm
          7258462a504e594f07433f342b0870c1
        source rpm:
        ftp://ftp.suse.com/pub/suse/ppc/update/7.0/zq1/cistron-1.6.3-85.src.rpm
          d6ebb9cdd5c3538eae2db805f6fda97b

        SuSE-6.4
        ftp://ftp.suse.com/pub/suse/ppc/update/6.4/n2/cistron-1.6.2-21.ppc.rpm
          6274908e60a8ff24a3be7c4936b36d90
        source rpm:
        ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/cistron-1.6.2-21.src.rpm
          aa350c9fedc384c382744b4b2563250c

    ______________________________________________________________________________

    2) Pending vulnerabilities in SuSE Distributions and Workarounds:

        - mtr
        A buffer overflow was found in mtr, which enables an attacker
        to get access to mtr's raw socket. Fixed RPM packages are
        available from our ftp servers. Additionally you should
        remove the setuid bit from mtr and add an appropriate entry
        in /etc/permissions.local.

        - webalizer
        A possible buffer overflow in the webalizer DNS resolv code
        was found. The bug seems no to be exploitable. The SuSE Security
        Team fixed this and other possible bugs in the webalizer code.
        New RPM packages will be available on our FTP servers.

        - ntop
        Version < 2.0.99 of ntop could be crashed by feeding ntop's HTTP
        code with invalid URL's. This bug does not exist in ntop version 2.0.1
        which is shipped with SuSE 8.0.

        - slrnpull
        Problems with slrnpull have been reported on the bugtraq mailinglist.
        SuSE does not ship this program setuid and is therefore not vulnerable
        to the buffer overflow attack against this program.

        - openssh
        Niels Provos published a local exploitable bug for OpenSSH.
        This bug could only be exploited if Kerberos and AFS support was
        enabled while compiling OpenSSH. The OpenSSH RPM file that comes with
        SuSE hasn't enabled Kerberos nor AFS, so we are not vulnerable to this
        attack. The bug will be fixed with the next security update of OpenSSH.

    ______________________________________________________________________________

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

        suse-security-announcesuse.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-subscribesuse.com>.

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

        =====================================================================
        SuSE's security contact is <securitysuse.com> or <securitysuse.de>.
        The <securitysuse.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 <securitysuse.de>
    pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <buildsuse.de>

    - -----BEGIN PGP PUBLIC KEY BLOCK-----
    Version: GnuPG v1.0.6 (GNU/Linux)
    Comment: For info see http://www.gnupg.org

    mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff
    4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d
    M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO
    QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK
    XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE
    D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd
    G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM
    CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE
    myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr
    YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD
    wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d
    NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe
    QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe
    LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t
    XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU
    D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3
    0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot
    1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW
    cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E
    ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f
    AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E
    Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/
    HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h
    t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT
    tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM
    523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q
    2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8
    QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw
    JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ
    1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH
    ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1
    wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY
    EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol
    0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK
    CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co
    SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo
    omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt
    A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J
    /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE
    GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf
    ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT
    ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8
    RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ
    8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb
    B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X
    11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA
    8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj
    qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p
    WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL
    hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG
    BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+
    AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi
    RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0
    zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM
    /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7
    whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl
    D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz
    dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI
    RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI
    DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE=
    =LRKC
    - -----END PGP PUBLIC KEY BLOCK-----

    -----BEGIN PGP SIGNATURE-----
    Version: 2.6.3i
    Charset: noconv

    iQEVAwUBPM0xTXey5gA9JdPZAQGrKgf/U+sVMw2IG/AB0fCZLuFHxWeUPf1ivvYN
    7HwFYivB2LQgQGpPRT/T9YpdsnRJzCIugyx+sMFDjN6ARGRpeehQR5P+OZPq0xBH
    ptxcfks4/1u3bx/pRQ5a4KOxqSscYuEL8B66yH4nTb2E5QsmR5ZCxtoA0VtwLFT2
    ZGqr3eAY6Uk78V7G/oPszdZtkcPJGMsHg6TEjFiu5ff7pclULWSmj8iQBKcMJbcG
    sFu3kfhrGYDq0MYMLTXttDDgC7dM9Y4z819ZHDZA2cSZAiBEuCFQ+NweEE4+sY/r
    QDie2nbRr6ZWTLYz6/kUc5KNyhMiQD+qhkUJg5yhDBnb/BFu7yfahg==
    =APbN
    -----END PGP SIGNATURE-----

    -- 
    ~
    ~ perl self.pl
    ~ $_='print"\$_=\47$_\47;eval"';eval
    ~ krahmersuse.de - SuSE Security Team
    ~
    

    -- To unsubscribe, e-mail: suse-security-unsubscribesuse.com For additional commands, e-mail: suse-security-helpsuse.com Security-related bug reports go to securitysuse.de, not here