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CVE-2015-1798

CVE-2015-1798

EPSS 2.2%
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.
Produtos afetados
n/a · n/a

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Referências
http://bugs.ntp.org/show_bug.cgi?id=2779http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.htmlhttp://lists.opensuse.org/opensuse-updates/2015-04/msg00052.htmlhttp://marc.info/?l=bugtraq&m=143213867103400&w=2http://rhn.redhat.com/errata/RHSA-2015-1459.htmlhttps://kc.mcafee.com/corporate/index?page=content&id=SB10114https://security.gentoo.org/glsa/201509-01http://support.apple.com/kb/HT204942http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilitieshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd