ntp 4.2.8 ctl_getitem memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.03

A vulnerability classified as critical has been found in ntp 4.2.8 (Network Management Software). This affects the function ctl_getitem. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

ntpd in NTP before 4.2.8p7 and 4.3.x before 4.3.92 allows remote attackers to cause a denial of service (ntpd abort) by a large request data value, which triggers the ctl_getitem function to return a NULL value.

The weakness was shared 04/27/2016 by Security Team with Qihoo 360 as confirmed security notice (Website). The advisory is shared at support.ntp.org. This vulnerability is uniquely identified as CVE-2016-2519 since 02/20/2016. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Additional levels of successful authentication are needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 93352 (AIX 7.2 TL 0 : ntp (IV87939) (deprecated)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316362 (Cisco UCS 6200 Series Fabric Interconnects Multiple Vulnerabilities in Network Time Protocol Daemon (CSCuz44156)).

Upgrading to version 4.2.8p7 eliminates this vulnerability. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (112747) and Tenable (93352). The entries 78854, 80651, 82981 and 82982 are related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.7

VulDB Base Score: 8.6
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93352
Nessus Name: AIX 7.2 TL 0 : ntp (IV87939) (deprecated)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 862576
OpenVAS Name: SuSE Update for ntp SUSE-SU-2016:1568-1 (ntp)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: ntp 4.2.8p7

Timelineinfo

02/20/2016 🔍
04/26/2016 +65 days 🔍
04/27/2016 +1 days 🔍
04/28/2016 +1 days 🔍
09/06/2016 +130 days 🔍
09/08/2016 +2 days 🔍
01/30/2017 +144 days 🔍
07/27/2022 +2004 days 🔍

Sourcesinfo

Advisory: support.ntp.org
Researcher: Security Team
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2519 (🔍)
CERT VU: 🔍
X-Force: 112747 - NTP ctl_getitem() denial of service
SecurityTracker: 1035705
SecurityFocus: 88204 - NTP CVE-2016-2519 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 04/28/2016 10:48
Updated: 07/27/2022 09:54
Changes: 04/28/2016 10:48 (67), 10/29/2018 06:15 (20), 07/27/2022 09:54 (4)
Complete: 🔍

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