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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.
Publish Date : 2015-04-08 Last Update Date : 2018-01-04
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- CVSS Scores & Vulnerability Types

CVSS Score
1.8
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 17

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2015:1459: ntp security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20151459 unix
RHSA-2015:2231: ntp security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20152231 unix
Symmetric-Key feature allows MAC address spoofing. oval:org.mitre.oval:def:28698 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-1798

# Product Type Vendor Product Version Update Edition Language
1 Application NTP NTP 4.2.7p444 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
NTP NTP 1

- References For CVE-2015-1798

http://rhn.redhat.com/errata/RHSA-2015-1459.html
REDHAT RHSA-2015:1459
https://security.gentoo.org/glsa/201509-01
GENTOO GLSA-201509-01
https://kc.mcafee.com/corporate/index?page=content&id=SB10114 CONFIRM
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html CONFIRM
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html CONFIRM
http://www.kb.cert.org/vuls/id/374268
CERT-VN VU#374268
http://www.debian.org/security/2015/dsa-3223
DEBIAN DSA-3223
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities CONFIRM
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155863.html
FEDORA FEDORA-2015-5874
http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155864.html
FEDORA FEDORA-2015-5761
http://www.securityfocus.com/bid/73951
BID 73951 NTP CVE-2015-1798 Man in the Middle Security Bypass Vulnerability Release Date:2017-05-11
http://lists.opensuse.org/opensuse-updates/2015-04/msg00052.html
SUSE openSUSE-SU-2015:0775
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-ntpd
CISCO 20150408 Multiple Vulnerabilities in ntpd (April 2015) Affecting Cisco Products
http://support.apple.com/kb/HT204942 CONFIRM
http://www.mandriva.com/security/advisories?name=MDVSA-2015:202
MANDRIVA MDVSA-2015:202
http://www.securitytracker.com/id/1032032
SECTRACK 1032032
http://www.ubuntu.com/usn/USN-2567-1
UBUNTU USN-2567-1
http://marc.info/?l=bugtraq&m=143213867103400&w=2
HP SSRT102029
http://tools.cisco.com/security/center/viewAlert.x?alertId=38276
CISCO 20150408 Network Time Protocol Daemon MAC Checking Failure Authentication Bypass Vulnerability
http://bugs.ntp.org/show_bug.cgi?id=2779 CONFIRM
http://lists.apple.com/archives/security-announce/2015/Jun/msg00002.html
APPLE APPLE-SA-2015-06-30-2

- Metasploit Modules Related To CVE-2015-1798

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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