Vulnerability Details

NTP Local Buffer Overflow And Sybil Vulnerabilities

Published: 2018-06-25 11:51:15
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Detection Type:
Remote Banner Unreliable

Summary:
The host is running NTP and is prone to a local buffer overflow and sybil vulnerabilities.

Detection Method:
Checks if a vulnerable version is present on the target host.

Technical Details:
Multiple flaws are due to, - An insufficient validation of input argument for an IPv4 or IPv6 command-line parameter. - If a system is set up to use a trustedkey and if one is not using the feature allowing an optional 4th field in the ntp.keys file to specify which IPs can serve time.

Impact:
Successful exploitation will allow attackers to execute code or escalate to higher privileges and bypass certain security restrictions and perform some unauthorized actions to the application. This may aid in further attacks.

Affected Versions:
All ntp-4 releases up to, but not including 4.2.8p12, and 4.3.0 up to, but not including 4.3.94.

Recommendations:
Upgrade to 4.2.8p12 or 4.3.94 or later. Please see the references for more information.

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2018-12327
https://nvd.nist.gov/vuln/detail/CVE-2016-1549

SecurityFocus Bugtraq ID:

https://www.securityfocus.com/bid/104517
https://www.securityfocus.com/bid/88200

References:

https://gist.github.com/fakhrizulkifli/9b58ed8e0354e8deee50b0eebd1c011f
https://www.exploit-db.com/exploits/44909
http://support.ntp.org/bin/view/Main/NtpBug3505
http://support.ntp.org/bin/view/Main/NtpBug3012P12
http://www.ntp.org/downloads.html

Severity
High
CVSS Score
7.5
Published
2018-06-25
Modified
2019-05-17
Category
General

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