ntp 4.2.8 MATCH_ASSOC out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in ntp 4.2.8. This issue affects the function MATCH_ASSOC. Such manipulation leads to out-of-bounds. This vulnerability is listed as CVE-2016-2518. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in ntp 4.2.8 (Network Management Software). It has been rated as critical. Affected by this issue is the function MATCH_ASSOC. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. CVE summarizes:

The MATCH_ASSOC function in NTP before version 4.2.8p9 and 4.3.x before 4.3.92 allows remote attackers to cause an out-of-bounds reference via an addpeer request with a large hmode value.

The weakness was presented 04/27/2016 by Security Team with Qihoo 360 as confirmed security notice (Website). The advisory is shared for download at support.ntp.org. This vulnerability is handled as CVE-2016-2518 since 02/20/2016. The exploitation is known to be difficult. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. There are known technical details, 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 (112746), Tenable (93352) and SecurityFocus (BID 88226†). See VDB-78854, VDB-80651, VDB-82981 and VDB-82982 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: RHSA-2016:1141
Researcher: Security Team
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2518 (🔍)
GCVE (CVE): GCVE-0-2016-2518
GCVE (VulDB): GCVE-100-82988

OVAL: 🔍

CERT: 🔍
X-Force: 112746 - NTP MATCH_ASSOC() denial of service
SecurityFocus: 88226 - NTP CVE-2016-2518 Denial of Service Vulnerability
SecurityTracker: 1035705

See also: 🔍

Entryinfo

Created: 04/28/2016 10:48
Updated: 07/27/2022 09:50
Changes: 04/28/2016 10:48 (68), 10/29/2018 06:15 (20), 07/27/2022 09:50 (5)
Complete: 🔍
Cache ID: 216::103

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