VDB-78200 · CVE-2014-9751 · RHSA-2015:1459

ntp up to 4.2.7 on Linux/OS X ntpd ntp_io.c code

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

A vulnerability was found in ntp up to 4.2.7 on Linux/OS X (Network Management Software). It has been rated as critical. Affected by this issue is an unknown part of the file ntp_io.c of the component ntpd. The manipulation with an unknown input leads to a code vulnerability. Using CWE to declare the problem leads to CWE-17. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published 10/06/2015 (Website). The advisory is shared for download at kb.cert.org. This vulnerability is handled as CVE-2014-9751 since 10/04/2015. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 84951 (RHEL 6 : ntp (RHSA-2015:1459)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195997 (Ubuntu Security Notification for Ntp Vulnerabilities (USN-2497-1)).

Upgrading to version 4.2.8p1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (84951). Similar entries are available at 68640, 68641, 74740 and 78199.

Productinfo

Type

Network Management Software

Name

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Code
CWE: CWE-17
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 84951
Nessus Name: RHEL 6 : ntp (RHSA-2015:1459)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800407
OpenVAS Name: NTP Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ntp 4.2.8p1

Timelineinfo

02/04/2015 🔍
02/04/2015 +0 days 🔍
07/22/2015 +168 days 🔍
07/23/2015 +1 days 🔍
10/04/2015 +73 days 🔍
10/05/2015 +1 days 🔍
10/06/2015 +1 days 🔍
10/06/2015 +0 days 🔍
11/06/2015 +31 days 🔍
06/20/2022 +2418 days 🔍

Sourcesinfo

Advisory: RHSA-2015:1459
Status: Not defined
Confirmation: 🔍

CVE: CVE-2014-9751 (🔍)
OVAL: 🔍

Vulnerability Center: 54242 - NTP 4.0 - 4.2.8p Remote Code Execution in The read_network_packet Function in ntp_io.c in ntpd - CVE-2014-9751, Medium
SecurityFocus: 72584 - NTP 'ntp_io.c' Authentication Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 10/06/2015 11:29
Updated: 06/20/2022 08:22
Changes: 10/06/2015 11:29 (55), 03/11/2018 09:43 (24), 06/20/2022 08:22 (3)
Complete: 🔍