ntpd 4.2.8 Password Management memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in ntpd 4.2.8. This affects an unknown function of the component Password Management. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2015-7854. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ntpd 4.2.8 (Network Management Software) and classified as critical. This issue affects an unknown code of the component Password Management. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the password management functionality in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted key file.

The weakness was published 10/21/2015 by Yves Younan with Cisco Talos as cisco-sa-20151021-ntp as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2015-7854 since 10/16/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 86519 (FreeBSD : ntp -- 13 low- and medium-severity vulnerabilities (c4a18a12-77fc-11e5-a687-206a8a720317)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD 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 (107437), Tenable (86519), SecurityFocus (BID 77277†) and Vulnerability Center (SBV-53949†). talosintel.com is providing further details. Similar entries are available at VDB-78844, VDB-78846, VDB-78847 and VDB-78848. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: 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: 86519
Nessus Name: FreeBSD : ntp -- 13 low- and medium-severity vulnerabilities (c4a18a12-77fc-11e5-a687-206a8a720317)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103403
OpenVAS Name: Multiple Vulnerabilities in ntpd Affecting Cisco Products - October 2015
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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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: Yves Younan
Organization: Cisco Talos
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7854 (🔍)
GCVE (CVE): GCVE-0-2015-7854
GCVE (VulDB): GCVE-100-78845
X-Force: 107437 - Network Time Protocol password management buffer overflow
SecurityFocus: 77277 - Network Time Protocol CVE-2015-7854 Buffer Overflow Vulnerability
SecurityTracker: 1033951
Vulnerability Center: 53949 - NTP before 4.2.8p4 Remote Memory Modification or Other Impact due to Memory Corruption, High

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/23/2015 10:03
Updated: 06/24/2022 21:21
Changes: 10/23/2015 10:03 (85), 02/20/2018 10:26 (5), 06/24/2022 21:06 (4), 06/24/2022 21:21 (1)
Complete: 🔍
Cache ID: 216:DC4:103

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