ntpd 4.2.8 Configuration Directive input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in ntpd 4.2.8. It has been classified as critical. Impacted is an unknown function of the component Configuration Directive Handler. This manipulation causes input validation. This vulnerability appears as CVE-2015-7703. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in ntpd 4.2.8 (Network Management Software) and classified as critical. Affected by this vulnerability is an unknown code block of the component Configuration Directive Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity.

The weakness was presented 10/21/2015 as cisco-sa-20151021-ntp as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2015-7703 since 10/04/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 85751 (Amazon Linux AMI : ntp (ALAS-2015-593)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38684 (Network Time Protocol Multiple Security Vulnerabilities (ntp-4.2.8p4)).

Upgrading to version 4.2.8p4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 21836.

The vulnerability is also documented in the databases at X-Force (107445), Tenable (85751), SecurityFocus (BID 77278†) and Vulnerability Center (SBV-53940†). See VDB-78844, VDB-78845, VDB-78846 and VDB-78847 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 85751
Nessus Name: Amazon Linux AMI : ntp (ALAS-2015-593)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703388
OpenVAS Name: Debian Security Advisory DSA 3388-1 (ntp - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: ntpd 4.2.8p4
TippingPoint: 🔍
Fortigate IPS: 🔍

Timelineinfo

10/04/2015 🔍
10/21/2015 +17 days 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/23/2015 +2 days 🔍
10/23/2015 +0 days 🔍
07/24/2017 +640 days 🔍
06/25/2022 +1796 days 🔍

Sourcesinfo

Advisory: cisco-sa-20151021-ntp
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7703 (🔍)
GCVE (CVE): GCVE-0-2015-7703
GCVE (VulDB): GCVE-100-78853

OVAL: 🔍

X-Force: 107445 - Network Time Protocol configuration directives directory traversal
SecurityFocus: 77278
SecurityTracker: 1033951
Vulnerability Center: 53940 - NTP before 4.2.8p4 Remote Unspecified due to an Issue in Configuration Directives \, Medium

See also: 🔍

Entryinfo

Created: 10/23/2015 10:05
Updated: 06/25/2022 00:41
Changes: 10/23/2015 10:05 (83), 02/19/2018 10:10 (3), 06/25/2022 00:29 (5), 06/25/2022 00:41 (1)
Complete: 🔍
Cache ID: 216::103

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