SB2017011319 - Multiple vulnerabilities in ntp

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Main Vulnerability Database SB2017011319

SB2017011319 - Multiple vulnerabilities in ntp

Published: January 13, 2017 Updated: August 8, 2020

Security Bulletin ID SB2017011319
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Resource exhaustion (CVE-ID: CVE-2016-7427)

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.


2) Resource exhaustion (CVE-ID: CVE-2016-7428)

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via the poll interval in a broadcast packet.


3) Input validation error (CVE-ID: CVE-2016-7431)

The vulnerability allows a remote non-authenticated attacker to manipulate data.

NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.


Remediation

Install update from vendor's website.

References