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  <DocumentTitle xml:lang="en">Security update for dnsmasq</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
  <DocumentPublisher Type="Vendor">
    <ContactDetails>security@suse.de</ContactDetails>
    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
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    <Identification>
      <ID>SUSE-SU-2017:2616-1</ID>
    </Identification>
    <Status>Final</Status>
    <Version>1</Version>
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        <Number>1</Number>
        <Date>2017-10-02T13:53:30Z</Date>
        <Description>current</Description>
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  <DocumentNotes>
    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for dnsmasq</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">This update for dnsmasq fixes the following issues.

Remedy the following security issues:

- CVE-2017-14491: 2 byte heap based overflow. [bsc#1060354]
- CVE-2017-14492: heap based overflow. [bsc#1060355]
- CVE-2017-14493: stack based overflow. [bsc#1060360]
- CVE-2017-14494: DHCP - info leak. [bsc#1060361]
- CVE-2017-14495: DNS - OOM DoS. [bsc#1060362]
- CVE-2017-14496: DNS - DoS Integer underflow. [bsc#1060364]
- Prevent a man-in-the-middle attack (bsc#972164, fate#321175).

Furthermore, the following issues have been fixed:

- Fix DHCP relaying, broken in 2.76 and 2.77.
- Update to version 2.78 (fate#321175, fate#322030, bsc#1035227).
- Fix PXE booting for UEFI architectures (fate#322030).
- Drop PrivateDevices=yes which breaks logging (bsc#902511, bsc#904537)
- Build with support for DNSSEC (fate#318323, bsc#908137).

Please note that this update brings a (small) potential incompatibility in the
handling of 'basename' in --pxe-service. Please read the CHANGELOG and the
documentation if you are using this option.

</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-SERVER-12-2017-1616</Note>
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  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
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      <Description>Link for SUSE-SU-2017:2616-1</Description>
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    <Reference Type="Self">
      <URL>https://lists.suse.com/pipermail/sle-security-updates/2017-October/003268.html</URL>
      <Description>E-Mail link for SUSE-SU-2017:2616-1</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/1035227</URL>
      <Description>SUSE Bug 1035227</Description>
    </Reference>
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      <URL>https://bugzilla.suse.com/1060354</URL>
      <Description>SUSE Bug 1060354</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1060355</URL>
      <Description>SUSE Bug 1060355</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1060360</URL>
      <Description>SUSE Bug 1060360</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1060361</URL>
      <Description>SUSE Bug 1060361</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1060362</URL>
      <Description>SUSE Bug 1060362</Description>
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    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1060364</URL>
      <Description>SUSE Bug 1060364</Description>
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      <URL>https://bugzilla.suse.com/902511</URL>
      <Description>SUSE Bug 902511</Description>
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      <URL>https://bugzilla.suse.com/904537</URL>
      <Description>SUSE Bug 904537</Description>
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      <URL>https://bugzilla.suse.com/908137</URL>
      <Description>SUSE Bug 908137</Description>
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      <URL>https://bugzilla.suse.com/972164</URL>
      <Description>SUSE Bug 972164</Description>
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    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2015-3294/</URL>
      <Description>SUSE CVE CVE-2015-3294 page</Description>
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      <URL>https://www.suse.com/security/cve/CVE-2015-8899/</URL>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.</Note>
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        <Description>SUSE Bug 1060361</Description>
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        <Description>SUSE Bug 1063832</Description>
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        <Description>SUSE Bug 1143944</Description>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted IPv6 router advertisement request.</Note>
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        <Description>SUSE Bug 1060355</Description>
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        <Description>SUSE Bug 1060360</Description>
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        <Description>SUSE Bug 1060361</Description>
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        <Description>SUSE Bug 1060362</Description>
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        <Description>SUSE Bug 1060364</Description>
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        <Description>SUSE Bug 1063832</Description>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.</Note>
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        <Description>SUSE Bug 1060362</Description>
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        <Description>SUSE Bug 1060364</Description>
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        <Description>SUSE Bug 1063832</Description>
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      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">dnsmasq before 2.78, when configured as a relay, allows remote attackers to obtain sensitive memory information via vectors involving handling DHCPv6 forwarded requests.</Note>
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        <Description>SUSE Bug 1060361</Description>
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        <Description>SUSE Bug 1060362</Description>
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        <Description>SUSE Bug 1060364</Description>
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      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.8</BaseScoreV2>
        <VectorV2>AV:N/AC:L/Au:N/C:N/I:N/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>7.5</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</VectorV3>
      </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/2017/suse-su-20172616-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-14495.html</URL>
        <Description>CVE-2017-14495</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060360</URL>
        <Description>SUSE Bug 1060360</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060361</URL>
        <Description>SUSE Bug 1060361</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060362</URL>
        <Description>SUSE Bug 1060362</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060364</URL>
        <Description>SUSE Bug 1060364</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="8">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.</Note>
    </Notes>
    <CVE>CVE-2017-14496</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Server 12-LTSS:dnsmasq-2.78-6.6.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.8</BaseScoreV2>
        <VectorV2>AV:N/AC:L/Au:N/C:N/I:N/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>7.5</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</VectorV3>
      </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/2017/suse-su-20172616-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-14496.html</URL>
        <Description>CVE-2017-14496</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060360</URL>
        <Description>SUSE Bug 1060360</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060361</URL>
        <Description>SUSE Bug 1060361</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060362</URL>
        <Description>SUSE Bug 1060362</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1060364</URL>
        <Description>SUSE Bug 1060364</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
</cvrfdoc>
