{
   "CVE_data_meta" : {
      "ASSIGNER" : "cve@mitre.org",
      "ID" : "CVE-2015-1798",
      "STATE" : "PUBLIC"
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   "affects" : {
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               "vendor_name" : "n/a"
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   "data_version" : "4.0",
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            "value" : "The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC."
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         {
            "name" : "http://bugs.ntp.org/show_bug.cgi?id=2779",
            "refsource" : "CONFIRM",
            "url" : "http://bugs.ntp.org/show_bug.cgi?id=2779"
         },
         {
            "name" : "http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities",
            "refsource" : "CONFIRM",
            "url" : "http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities"
         },
         {
            "name" : "https://kc.mcafee.com/corporate/index?page=content&id=SB10114",
            "refsource" : "CONFIRM",
            "url" : "https://kc.mcafee.com/corporate/index?page=content&id=SB10114"
         },
         {
            "name" : "http://support.apple.com/kb/HT204942",
            "refsource" : "CONFIRM",
            "url" : "http://support.apple.com/kb/HT204942"
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         {
            "name" : "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html",
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            "url" : "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
         },
         {
            "name" : "http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html",
            "refsource" : "CONFIRM",
            "url" : "http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html"
         },
         {
            "name" : "APPLE-SA-2015-06-30-2",
            "refsource" : "APPLE",
            "url" : "http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html"
         },
         {
            "name" : "20150408 Multiple Vulnerabilities in ntpd (April 2015) Affecting Cisco Products",
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            "url" : "http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd"
         },
         {
            "name" : "20150408 Network Time Protocol Daemon MAC Checking Failure Authentication Bypass Vulnerability",
            "refsource" : "CISCO",
            "url" : "http://tools.cisco.com/security/center/viewAlert.x?alertId=38276"
         },
         {
            "name" : "DSA-3223",
            "refsource" : "DEBIAN",
            "url" : "http://www.debian.org/security/2015/dsa-3223"
         },
         {
            "name" : "FEDORA-2015-5761",
            "refsource" : "FEDORA",
            "url" : "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html"
         },
         {
            "name" : "FEDORA-2015-5874",
            "refsource" : "FEDORA",
            "url" : "http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html"
         },
         {
            "name" : "GLSA-201509-01",
            "refsource" : "GENTOO",
            "url" : "https://security.gentoo.org/glsa/201509-01"
         },
         {
            "name" : "HPSBUX03333",
            "refsource" : "HP",
            "url" : "http://marc.info/?l=bugtraq&m=143213867103400&w=2"
         },
         {
            "name" : "SSRT102029",
            "refsource" : "HP",
            "url" : "http://marc.info/?l=bugtraq&m=143213867103400&w=2"
         },
         {
            "name" : "MDVSA-2015:202",
            "refsource" : "MANDRIVA",
            "url" : "http://www.mandriva.com/security/advisories?name=MDVSA-2015:202"
         },
         {
            "name" : "RHSA-2015:1459",
            "refsource" : "REDHAT",
            "url" : "http://rhn.redhat.com/errata/RHSA-2015-1459.html"
         },
         {
            "name" : "openSUSE-SU-2015:0775",
            "refsource" : "SUSE",
            "url" : "http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html"
         },
         {
            "name" : "USN-2567-1",
            "refsource" : "UBUNTU",
            "url" : "http://www.ubuntu.com/usn/USN-2567-1"
         },
         {
            "name" : "VU#374268",
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            "url" : "http://www.kb.cert.org/vuls/id/374268"
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         {
            "name" : "73951",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/73951"
         },
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            "name" : "1032032",
            "refsource" : "SECTRACK",
            "url" : "http://www.securitytracker.com/id/1032032"
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