National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2015-1798 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Impact

CVSS v2.0 Severity and Metrics:

Base Score: 1.8 LOW
Vector: (AV:A/AC:H/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.2


Access Vector (AV): Local_Network
Access Complexity (AC): High
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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://rhn.redhat.com/errata/RHSA-2015-1459.html
http://support.apple.com/kb/HT204942
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities Vendor Advisory
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 Third Party Advisory US Government Resource
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

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
4.2.7p444


Change History

13 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2015-1798
NVD Published Date:
04/08/2015
NVD Last Modified:
01/04/2018