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  <DocumentTitle xml:lang="en">Security update for ntp</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
  <DocumentPublisher Type="Vendor">
    <ContactDetails>security@suse.de</ContactDetails>
    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
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      <ID>SUSE-SU-2016:1563-1</ID>
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        <Date>2016-06-13T12:31:29Z</Date>
        <Description>current</Description>
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    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for ntp</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">ntp was updated to version 4.2.8p8 to fix five security issues.

These security issues were fixed:
- CVE-2016-4953: Bad authentication demobilizes ephemeral associations (bsc#982065).
- CVE-2016-4954: Processing spoofed server packets (bsc#982066).
- CVE-2016-4955: Autokey association reset (bsc#982067).
- CVE-2016-4956: Broadcast interleave (bsc#982068).
- CVE-2016-4957: CRYPTO_NAK crash (bsc#982064).

These non-security issues were fixed:
- Keep the parent process alive until the daemon has finished initialisation, to make sure that the PID file exists when the parent returns.
- bsc#979302: Change the process name of the forking DNS worker process to avoid the impression that ntpd is started twice.
- bsc#981422: Don't ignore SIGCHILD because it breaks wait().
- bsc#979981: ntp-wait does not accept fractional seconds, so use 1 instead of 0.2 in ntp-wait.service.
- Separate the creation of ntp.keys and key #1 in it to avoid problems when upgrading installations that have the file, but no key #1, which is needed e.g. by 'rcntp addserver'.
</Note>
    <Note Title="Terms of Use" Type="Legal Disclaimer" Ordinal="3" xml:lang="en">The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).</Note>
    <Note Title="Patchnames" Type="Details" Ordinal="4" xml:lang="en">SUSE-SLE-DESKTOP-12-SP1-2016-930,SUSE-SLE-SERVER-12-SP1-2016-930</Note>
  </DocumentNotes>
  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
  <DocumentReferences>
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      <URL>https://www.suse.com/support/update/announcement/2016/suse-su-20161563-1/</URL>
      <Description>Link for SUSE-SU-2016:1563-1</Description>
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    <Reference Type="Self">
      <URL>https://lists.suse.com/pipermail/sle-security-updates/2016-June/002111.html</URL>
      <Description>E-Mail link for SUSE-SU-2016:1563-1</Description>
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    <Reference Type="Self">
      <URL>https://www.suse.com/support/security/rating/</URL>
      <Description>SUSE Security Ratings</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/979302</URL>
      <Description>SUSE Bug 979302</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/979981</URL>
      <Description>SUSE Bug 979981</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/981422</URL>
      <Description>SUSE Bug 981422</Description>
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      <URL>https://bugzilla.suse.com/982056</URL>
      <Description>SUSE Bug 982056</Description>
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      <URL>https://bugzilla.suse.com/982064</URL>
      <Description>SUSE Bug 982064</Description>
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      <URL>https://bugzilla.suse.com/982065</URL>
      <Description>SUSE Bug 982065</Description>
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      <URL>https://bugzilla.suse.com/982066</URL>
      <Description>SUSE Bug 982066</Description>
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      <URL>https://bugzilla.suse.com/982067</URL>
      <Description>SUSE Bug 982067</Description>
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      <URL>https://bugzilla.suse.com/982068</URL>
      <Description>SUSE Bug 982068</Description>
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      <Description>SUSE CVE CVE-2016-4953 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2016-4954/</URL>
      <Description>SUSE CVE CVE-2016-4954 page</Description>
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    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2016-4955/</URL>
      <Description>SUSE CVE CVE-2016-4955 page</Description>
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    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2016-4956/</URL>
      <Description>SUSE CVE CVE-2016-4956 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2016-4957/</URL>
      <Description>SUSE CVE CVE-2016-4957 page</Description>
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</Description>
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        <Description>CVE-2016-4953</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/962784</URL>
        <Description>SUSE Bug 962784</Description>
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      <Reference>
        <URL>https://bugzilla.suse.com/977459</URL>
        <Description>SUSE Bug 977459</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/982056</URL>
        <Description>SUSE Bug 982056</Description>
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        <URL>https://bugzilla.suse.com/982065</URL>
        <Description>SUSE Bug 982065</Description>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.</Note>
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</Description>
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        <URL>https://bugzilla.suse.com/982056</URL>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">ntpd in NTP 4.x before 4.2.8p8, when autokey is enabled, allows remote attackers to cause a denial of service (peer-variable clearing and association outage) by sending (1) a spoofed crypto-NAK packet or (2) a packet with an incorrect MAC value at a certain time.</Note>
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        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2016/suse-su-20161563-1/</URL>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.</Note>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">ntpd in NTP before 4.2.8p8 allows remote attackers to cause a denial of service (daemon crash) via a crypto-NAK packet.  NOTE: this vulnerability exists because of an incorrect fix for CVE-2016-1547.</Note>
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      </ScoreSetV3>
    </CVSSScoreSets>
    <Remediations>
      <Remediation Type="Vendor Fix">
        <Description xml:lang="en">To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
</Description>
        <URL>https://www.suse.com/support/update/announcement/2016/suse-su-20161563-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2016-4957.html</URL>
        <Description>CVE-2016-4957</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/977459</URL>
        <Description>SUSE Bug 977459</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/982056</URL>
        <Description>SUSE Bug 982056</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/982064</URL>
        <Description>SUSE Bug 982064</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
</cvrfdoc>
