Vulnerability Details CVE-2015-1798
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 70.4%
CVSS Severity
CVSS v2 Score 1.8
References
- http://bugs.ntp.org/show_bug.cgi?id=2779
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html
- http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html
- http://marc.info/?l=bugtraq&m=143213867103400&w=2
- http://marc.info/?l=bugtraq&m=143213867103400&w=2
- http://rhn.redhat.com/errata/RHSA-2015-1459.html
- http://support.apple.com/kb/HT204942
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd
- http://tools.cisco.com/security/center/viewAlert.x?alertId=38276
- http://www.debian.org/security/2015/dsa-3223
- http://www.kb.cert.org/vuls/id/374268
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:202
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/73951
- http://www.securitytracker.com/id/1032032
- http://www.ubuntu.com/usn/USN-2567-1
- https://kc.mcafee.com/corporate/index?page=content&id=SB10114
- https://security.gentoo.org/glsa/201509-01
- http://bugs.ntp.org/show_bug.cgi?id=2779
- http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html
- http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html
- http://marc.info/?l=bugtraq&m=143213867103400&w=2
- http://marc.info/?l=bugtraq&m=143213867103400&w=2
- http://rhn.redhat.com/errata/RHSA-2015-1459.html
- http://support.apple.com/kb/HT204942
- http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities
- http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd
- http://tools.cisco.com/security/center/viewAlert.x?alertId=38276
- http://www.debian.org/security/2015/dsa-3223
- http://www.kb.cert.org/vuls/id/374268
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:202
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/73951
- http://www.securitytracker.com/id/1032032
- http://www.ubuntu.com/usn/USN-2567-1
- https://kc.mcafee.com/corporate/index?page=content&id=SB10114
- https://security.gentoo.org/glsa/201509-01
Products affected by CVE-2015-1798
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cpe:2.3:a:ntp:ntp:-
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cpe:2.3:a:ntp:ntp:4.0
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cpe:2.3:a:ntp:ntp:4.0.72
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cpe:2.3:a:ntp:ntp:4.0.73
-
cpe:2.3:a:ntp:ntp:4.0.90
-
cpe:2.3:a:ntp:ntp:4.0.91
-
cpe:2.3:a:ntp:ntp:4.0.92
-
cpe:2.3:a:ntp:ntp:4.0.93
-
cpe:2.3:a:ntp:ntp:4.0.94
-
cpe:2.3:a:ntp:ntp:4.0.95
-
cpe:2.3:a:ntp:ntp:4.0.96
-
cpe:2.3:a:ntp:ntp:4.0.97
-
cpe:2.3:a:ntp:ntp:4.0.98
-
cpe:2.3:a:ntp:ntp:4.0.99
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cpe:2.3:a:ntp:ntp:4.1.0
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cpe:2.3:a:ntp:ntp:4.1.2
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cpe:2.3:a:ntp:ntp:4.2.0
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cpe:2.3:a:ntp:ntp:4.2.2
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cpe:2.3:a:ntp:ntp:4.2.4
-
cpe:2.3:a:ntp:ntp:4.2.5
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cpe:2.3:a:ntp:ntp:4.2.6
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cpe:2.3:a:ntp:ntp:4.2.7
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cpe:2.3:a:ntp:ntp:4.2.7p444