ntpd 4.2.8 cookedprint input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in ntpd 4.2.8. Affected is an unknown function of the component cookedprint. This manipulation causes input validation. This vulnerability is tracked as CVE-2015-7852. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in ntpd 4.2.8 (Network Management Software). It has been declared as critical. Affected by this vulnerability is some unknown processing of the component cookedprint. 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 confidentiality, integrity, and availability. The summary by CVE is:

ntpq in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted mode 6 response packets.

The weakness was disclosed 10/21/2015 by Cisco with Cisco Talos as cisco-sa-20151021-ntp as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2015-7852 since 10/16/2015. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 86638 (Amazon Linux AMI : ntp (ALAS-2015-607)), 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.

The vulnerability is also documented in the databases at X-Force (107439), Tenable (86638), SecurityFocus (BID 77288†) and Vulnerability Center (SBV-53947†). Additional details are provided at talosintel.com. The entries VDB-78844, VDB-78845, VDB-78846 and VDB-78848 are pretty similar. Be aware that VulDB is the high quality 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: 6.6
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: 86638
Nessus Name: Amazon Linux AMI : ntp (ALAS-2015-607)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2015-607
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: ntpd 4.2.8p4

Timelineinfo

10/16/2015 🔍
10/21/2015 +5 days 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/21/2015 +0 days 🔍
10/23/2015 +2 days 🔍
10/23/2015 +0 days 🔍
08/07/2017 +654 days 🔍
06/24/2022 +1782 days 🔍

Sourcesinfo

Advisory: cisco-sa-20151021-ntp
Researcher: Cisco
Organization: Cisco Talos
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7852 (🔍)
GCVE (CVE): GCVE-0-2015-7852
GCVE (VulDB): GCVE-100-78847

OVAL: 🔍

X-Force: 107439 - Network Time Protocol cookedprint functionality buffer overflow
SecurityFocus: 77288 - Network Time Protocol 'ntpq.c' Memory Corruption Vulnerability
SecurityTracker: 1033951
Vulnerability Center: 53947 - NTP before 4.2.8p4 Remote Memory Modification or Other Impact due to Memory Corruption, High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/23/2015 10:04
Updated: 06/24/2022 22:06
Changes: 10/23/2015 10:04 (87), 02/20/2018 10:25 (4), 06/24/2022 21:54 (4), 06/24/2022 22:06 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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