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{"acknowledgement": "This issue was discovered by Miroslav Lichvar (Red Hat).", "bugzilla": {"description": "ntp: autokey association reset", "id": "1340858", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1340858"}, "csaw": false, "cvss": {"cvss_base_score": "2.6", "cvss_scoring_vector": "AV:N/AC:H/Au:N/C:N/I:N/A:P", "status": "draft"}, "details": ["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."], "mitigation": {"lang": "en:us", "value": "Disable autokey authentication. Instead, configure ntp to use symmetric key authentication, or no authentication at all (if not required). To configure ntp with symmetric key authentication, follow the steps at https://access.redhat.com/solutions/393663"}, "name": "CVE-2016-4955", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "ntp", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "ntp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "ntp", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2016-06-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2016-4955\nhttps://nvd.nist.gov/vuln/detail/CVE-2016-4955\nhttp://support.ntp.org/bin/view/Main/SecurityNotice#June_2016_ntp_4_2_8p8_NTP_Securi"], "threat_severity": "Low"}

{}