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  • [SECURITY] [DSA 1948-1] New ntp packages fix denial of service (1/2)

    From Nico Golde@1:229/2 to All on Tue Dec 8 20:10:02 2009
    From: [email protected]

    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1

    - -------------------------------------------------------------------------- Debian Security Advisory DSA-1908-1 [email protected] http://www.debian.org/security/ Nico Golde December 8th, 2009 http://www.debian.org/security/faq
    - --------------------------------------------------------------------------

    Package : ntp
    Vulnerability : denial of service
    Problem type : remote
    Debian-specific: no
    Debian bug : 560074
    CVE ID : CVE-2009-3563

    Robin Park and Dmitri Vinokurov discovered that the daemon component of
    the ntp package, a reference implementation of the NTP protocol, is
    not properly reacting to certain incoming packets.

    An unexpected NTP mode 7 packets (MODE_PRIVATE) with spoofed IP data can lead ntpd to reply with a mode 7 response to the spoofed address. This may result in the service playing packet ping-pong with other ntp servers or even itself which causes CPU usage and excessive disk use due to logging. An attacker
    can use this to conduct denial of service attacks.


    For the oldstable distribution (etch), this problem has been fixed in
    version 1:4.2.2.p4+dfsg-2etch4.

    For the stable distribution (lenny), this problem has been fixed in
    version 1:4.2.4p4+dfsg-8lenny3.

    For the testing (squeeze) and unstable (sid) distribution, this problem
    will be fixed soon.


    We recommend that you upgrade your ntp packages.

    Upgrade instructions
    - --------------------

    wget url
    will fetch the file for you
    dpkg -i file.deb
    will install the referenced file.

    If you are using the apt-get package manager, use the line for
    sources.list as given below:

    apt-get update
    will update the internal database
    apt-get upgrade
    will install corrected packages

    You may use an automated update by adding the resources from the
    footer to the proper configuration.


    Debian GNU/Linux 4.0 alias etch
    - -------------------------------

    Debian (oldstable)
    - ------------------

    Oldstable updates are available for alpha, amd64, arm, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

    Source archives:

    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4.dsc
    Size/MD5 checksum: 906 115e93f010e32aa1c90231461487503a
    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg.orig.tar.gz
    Size/MD5 checksum: 2199764 ad746cda2d90dbb9ed06fe164273c5d0
    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4.diff.gz
    Size/MD5 checksum: 182632 80aa236bd0a39096c5e5d462c0b9b279

    Architecture independent packages:

    http://security.debian.org/pool/updates/main/n/ntp/ntp-refclock_4.2.2.p4+dfsg-2etch4_all.deb
    Size/MD5 checksum: 28596 df605f89c08a01116c2ff799777f6a2c
    http://security.debian.org/pool/updates/main/n/ntp/ntp-simple_4.2.2.p4+dfsg-2etch4_all.deb
    Size/MD5 checksum: 28594 0c683ac7e7f5b131515f956aed87de3d
    http://security.debian.org/pool/updates/main/n/ntp/ntp-doc_4.2.2.p4+dfsg-2etch4_all.deb
    Size/MD5 checksum: 912886 1af5a623cbf5f145f34dab7beefcd183

    alpha architecture (DEC Alpha)

    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_alpha.deb
    Size/MD5 checksum: 408070 ca33235c58a26ad1a839084b4f2d385c
    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_alpha.deb
    Size/MD5 checksum: 65056 e527eb4c93d427c025374805fb5288cb

    amd64 architecture (AMD x86_64 (AMD64))

    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_amd64.deb
    Size/MD5 checksum: 62258 13a4f4faaf699913e421c093e598f2a9
    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_amd64.deb
    Size/MD5 checksum: 359384 1a289aa1f8439e2ef736cbf29bbe140f

    arm architecture (ARM)

    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_arm.deb
    Size/MD5 checksum: 59784 8a84cae4e8f643cbd3ed684e5a7eb0ff
    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_arm.deb
    Size/MD5 checksum: 344316 57066e8abfdf51c36d63600c993f3c20

    hppa architecture (HP PA RISC)

    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_hppa.deb
    Size/MD5 checksum: 372448 0b8f9b90bb03a2f572066fe8b47c7202
    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_hppa.deb
    Size/MD5 checksum: 62160 88dc964fa357187ddc97d37513a863ba

    i386 architecture (Intel ia32)

    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_i386.deb
    Size/MD5 checksum: 58316 90fc92e7a8f6582ee21076849ae0dfba
    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_i386.deb
    Size/MD5 checksum: 333772 e5fbae24686d444fff118f3ce9cc45db

    ia64 architecture (Intel ia64)

    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_ia64.deb
    Size/MD5 checksum: 523358 0032e3c9bcb4a27a312a47fb95d1f9a1
    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_ia64.deb
    Size/MD5 checksum: 74712 72c1b601f4beb41c6c04a54534ba9c51

    mips architecture (MIPS (Big Endian))

    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_mips.deb
    Size/MD5 checksum: 382868 2980d63a9ca6344e6a76698d0e808f8c
    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_mips.deb
    Size/MD5 checksum: 63610 d523930b9b98d6353bf4e6fb7d7e57f5

    mipsel architecture (MIPS (Little Endian))

    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_mipsel.deb
    Size/MD5 checksum: 64134 e4042de5af081701911a7cece69c6cce
    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_mipsel.deb
    Size/MD5 checksum: 390142 b50dc2bd5970f224b6994c460f8f560a

    powerpc architecture (PowerPC)

    http://security.debian.org/pool/updates/main/n/ntp/ntp_4.2.2.p4+dfsg-2etch4_powerpc.deb
    Size/MD5 checksum: 358860 432b58ad621ac266455f7e5124d2eb1c
    http://security.debian.org/pool/updates/main/n/ntp/ntpdate_4.2.2.p4+dfsg-2etch4_powerpc.deb

    [continued in next message]

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