THREATPORT/VULNERABILITY/CVE-2014-9751
MEDIUM SEVERITY

CVE-2014-9751

Ntp vulnerability

CVSS
6.8
EPSS
4.5%
EPSS pct
91th
Exploited
No known
The read_network_packet function in ntp_io.c in ntpd in NTP 4.x before 4.2.8p1 on Linux and OS X does not properly determine whether a source IP address is an IPv6 loopback address, which makes it easier for remote attackers to spoof restricted packets, and read or write to the runtime state, by leveraging the ability to reach the ntpd machine's network interface with a packet from the ::1 address.
Affected vendor
Ntp
Affected product
Ntp
CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2015-10-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, medium attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 4.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 91% of all scored CVEs.

Check your external exposure to CVE-2014-9751

  • Confirm whether Ntp Ntp is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2014-9751.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2014-9751

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2014-9751 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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