CVE-2016-2518

Ntp vulnerability

CVSS

5.3

EPSS

15.1%

EPSS pct

96th

Exploited

No known

The MATCH_ASSOC function in NTP before version 4.2.8p9 and 4.3.x before 4.3.92 allows remote attackers to cause an out-of-bounds reference via an addpeer request with a large hmode value.

Affected vendor

Ntp

Affected product

Ntp

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness type (CWE)

CWE-125 — Out-of-bounds Read

Published

2017-01-30

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to availability.

Its EPSS score of 15.1% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2016-2518

Confirm whether Ntp Ntp is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2016-2518.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-2518

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-2518 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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