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  <DocumentTitle xml:lang="en">Security update for openvpn-openssl1</DocumentTitle>
  <DocumentType>SUSE Patch</DocumentType>
  <DocumentPublisher Type="Vendor">
    <ContactDetails>security@suse.de</ContactDetails>
    <IssuingAuthority>SUSE Security Team</IssuingAuthority>
  </DocumentPublisher>
  <DocumentTracking>
    <Identification>
      <ID>SUSE-SU-2017:1718-1</ID>
    </Identification>
    <Status>Final</Status>
    <Version>1</Version>
    <RevisionHistory>
      <Revision>
        <Number>1</Number>
        <Date>2017-06-29T11:41:38Z</Date>
        <Description>current</Description>
      </Revision>
    </RevisionHistory>
    <InitialReleaseDate>2017-06-29T11:41:38Z</InitialReleaseDate>
    <CurrentReleaseDate>2017-06-29T11:41:38Z</CurrentReleaseDate>
    <Generator>
      <Engine>cve-database/bin/generate-cvrf.pl</Engine>
      <Date>2017-02-24T01:00:00Z</Date>
    </Generator>
  </DocumentTracking>
  <DocumentNotes>
    <Note Title="Topic" Type="Summary" Ordinal="1" xml:lang="en">Security update for openvpn-openssl1</Note>
    <Note Title="Details" Type="General" Ordinal="2" xml:lang="en">This update for openvpn-openssl1 fixes the following issues:

- Some parts of the certificate-parsing code did not always clear all allocated
  memory. This would have allowed clients to leak a few bytes of memory for
  each connection attempt, thereby facilitating a (quite inefficient) DoS
  attack on the server. [bsc#1044947, CVE-2017-7521]

- The ASN1 parsing code contained a bug that could have resulted in some
  buffers being free()d twice, and this issue could have potentially been
  triggered remotely by a VPN peer. [bsc#1044947, CVE-2017-7521]

- If clients used a HTTP proxy with NTLM authentication, a man-in-the-middle
  attacker between client and proxy could cause the client to crash or disclose
  at most 96 bytes of stack memory. The disclosed stack memory was likely to
  contain the proxy password. If the proxy password had not been reused, this
  was unlikely to compromise the security of the OpenVPN tunnel itself. Clients
  who did not use the --http-proxy option with ntlm2 authentication were not
  affected. [bsc#1044947, CVE-2017-7520]

- It was possible to trigger an assertion by sending a malformed IPv6 packet.
  That issue could have been abused to remotely shutdown an openvpn server or
  client, if IPv6 and --mssfix were enabled and if the IPv6 networks used
  inside the VPN were known. [bsc#1044947, CVE-2017-7508]

- The installed sample configuration file was updated to comply to FIPS
  requirements. [bsc#988522]

- Remedy large latencies on the openVPN server during authentication process.
  [bsc#959511]

- Fix potential denial-of-service attacks found during independent audits.
  [bsc#1038713, bsc#1038709, CVE-2017-7478, bsc#1038711, CVE-2017-7479]
</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">secsp3-openvpn-openssl1-13182</Note>
  </DocumentNotes>
  <DocumentDistribution xml:lang="en">Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0)</DocumentDistribution>
  <DocumentReferences>
    <Reference Type="Self">
      <URL>https://www.suse.com/support/update/announcement/2017/suse-su-20171718-1/</URL>
      <Description>Link for SUSE-SU-2017:1718-1</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://lists.suse.com/pipermail/sle-security-updates/2017-June/002995.html</URL>
      <Description>E-Mail link for SUSE-SU-2017:1718-1</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/support/security/rating/</URL>
      <Description>SUSE Security Ratings</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1038709</URL>
      <Description>SUSE Bug 1038709</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1038711</URL>
      <Description>SUSE Bug 1038711</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1038713</URL>
      <Description>SUSE Bug 1038713</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/1044947</URL>
      <Description>SUSE Bug 1044947</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/959511</URL>
      <Description>SUSE Bug 959511</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://bugzilla.suse.com/988522</URL>
      <Description>SUSE Bug 988522</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2017-7478/</URL>
      <Description>SUSE CVE CVE-2017-7478 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2017-7479/</URL>
      <Description>SUSE CVE CVE-2017-7479 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2017-7508/</URL>
      <Description>SUSE CVE CVE-2017-7508 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2017-7520/</URL>
      <Description>SUSE CVE CVE-2017-7520 page</Description>
    </Reference>
    <Reference Type="Self">
      <URL>https://www.suse.com/security/cve/CVE-2017-7521/</URL>
      <Description>SUSE CVE CVE-2017-7521 page</Description>
    </Reference>
  </DocumentReferences>
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      <Branch Type="Product Name" Name="SUSE Linux Enterprise Server 11-SECURITY">
        <FullProductName ProductID="SUSE Linux Enterprise Server 11-SECURITY" CPE="cpe:/o:suse:sles:11:security">SUSE Linux Enterprise Server 11-SECURITY</FullProductName>
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      <FullProductName ProductID="openvpn-openssl1-2.3.2-0.9.1">openvpn-openssl1-2.3.2-0.9.1</FullProductName>
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      <FullProductName ProductID="SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-2.3.2-0.9.1">openvpn-openssl1-2.3.2-0.9.1 as a component of SUSE Linux Enterprise Server 11-SECURITY</FullProductName>
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      <FullProductName ProductID="SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-down-root-plugin-2.3.2-0.9.1">openvpn-openssl1-down-root-plugin-2.3.2-0.9.1 as a component of SUSE Linux Enterprise Server 11-SECURITY</FullProductName>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">OpenVPN version 2.3.12 and newer is vulnerable to unauthenticated Denial of Service of server via received large control packet. Note that this issue is fixed in 2.3.15 and 2.4.2.</Note>
    </Notes>
    <CVE>CVE-2017-7478</CVE>
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        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-2.3.2-0.9.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-down-root-plugin-2.3.2-0.9.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
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        <BaseScoreV2>5</BaseScoreV2>
        <VectorV2>AV:N/AC:L/Au:N/C:N/I:N/A:P</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-20171718-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-7478.html</URL>
        <Description>CVE-2017-7478</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1038709</URL>
        <Description>SUSE Bug 1038709</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1038713</URL>
        <Description>SUSE Bug 1038713</Description>
      </Reference>
    </References>
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    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.</Note>
    </Notes>
    <CVE>CVE-2017-7479</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-2.3.2-0.9.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-down-root-plugin-2.3.2-0.9.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>moderate</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>4</BaseScoreV2>
        <VectorV2>AV:N/AC:L/Au:S/C:N/I:N/A:P</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>6.5</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:N/AC:L/PR:L/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-20171718-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-7479.html</URL>
        <Description>CVE-2017-7479</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1038711</URL>
        <Description>SUSE Bug 1038711</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1038713</URL>
        <Description>SUSE Bug 1038713</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="3">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service when receiving malformed IPv6 packet.</Note>
    </Notes>
    <CVE>CVE-2017-7508</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-2.3.2-0.9.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-down-root-plugin-2.3.2-0.9.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>5.4</BaseScoreV2>
        <VectorV2>AV:N/AC:H/Au:N/C:N/I:N/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>5.9</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:N/AC:H/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-20171718-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-7508.html</URL>
        <Description>CVE-2017-7508</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1044947</URL>
        <Description>SUSE Bug 1044947</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="4">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service and/or possibly sensitive memory leak triggered by man-in-the-middle attacker.</Note>
    </Notes>
    <CVE>CVE-2017-7520</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-2.3.2-0.9.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-down-root-plugin-2.3.2-0.9.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.8</BaseScoreV2>
        <VectorV2>AV:N/AC:M/Au:N/C:P/I:N/A:C</VectorV2>
      </ScoreSetV2>
      <ScoreSetV3>
        <BaseScoreV3>8.2</BaseScoreV3>
        <VectorV3>CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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-20171718-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-7520.html</URL>
        <Description>CVE-2017-7520</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1044947</URL>
        <Description>SUSE Bug 1044947</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
  <vuln:Vulnerability xmlns="http://docs.oasis-open.org/csaf/ns/csaf-cvrf/v1.2/vuln" Ordinal="5">
    <Notes>
      <Note Title="Vulnerability Description" Type="General" Ordinal="1" xml:lang="en">OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().</Note>
    </Notes>
    <CVE>CVE-2017-7521</CVE>
    <ProductStatuses>
      <Status Type="Fixed">
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-2.3.2-0.9.1</ProductID>
        <ProductID>SUSE Linux Enterprise Server 11-SECURITY:openvpn-openssl1-down-root-plugin-2.3.2-0.9.1</ProductID>
      </Status>
    </ProductStatuses>
    <Threats>
      <Threat Type="Impact">
        <Description>important</Description>
      </Threat>
    </Threats>
    <CVSSScoreSets>
      <ScoreSetV2>
        <BaseScoreV2>7.1</BaseScoreV2>
        <VectorV2>AV:N/AC:M/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-20171718-1/</URL>
      </Remediation>
    </Remediations>
    <References>
      <Reference>
        <URL>https://www.suse.com/security/cve/CVE-2017-7521.html</URL>
        <Description>CVE-2017-7521</Description>
      </Reference>
      <Reference>
        <URL>https://bugzilla.suse.com/1044947</URL>
        <Description>SUSE Bug 1044947</Description>
      </Reference>
    </References>
  </vuln:Vulnerability>
</cvrfdoc>
