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CVE-2016-1549

Quick assessment

Affected
NTP Project NTP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NTP（Network Time Protocol，网络时间协议）是一款通过网络同步计算机时钟的协议。 NTP 4.2.8p7之前的版本和4.3.92之前的4.3.x版本中存在安全漏洞。攻击者可利用该漏洞绕过安全限制，执行未收取操作。

AI Predicted 7.5 Difficulty: Easy EPSS 3.18% · P87
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I. Basic Information for CVE-2016-1549

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
NTP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NTP（Network Time Protocol，网络时间协议）是一款通过网络同步计算机时钟的协议。 NTP 4.2.8p7之前的版本和4.3.92之前的4.3.x版本中存在安全漏洞。攻击者可利用该漏洞绕过安全限制，执行未收取操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NTP Project NTP 4.2.8p3 -
NTPsec Project NTPSec 3e160db8dc248a0bcb053b56a80167dc742d2b74 -

II. Public POCs for CVE-2016-1549

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III. Intelligence Information for CVE-2016-1549

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Vendor Advisories for CVE-2016-1549 (4)

Other References for CVE-2016-1549 (5)

Same Patch Batch · NTP Project · 2017-01-06 · 4 CVEs total

CVE-2016-1547 NTP 输入验证错误漏洞
CVE-2016-1548 NTP 安全漏洞
CVE-2016-1550 NTP和NTPSec 安全漏洞

IV. Related Vulnerabilities

Same product: NTP
Same vendor: NTP Project

V. Comments for CVE-2016-1549

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