ntpd 4.2.8 Remote Configuration memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in ntpd 4.2.8. Affected by this issue is some unknown functionality of the component Remote Configuration Handler. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2015-7850. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in ntpd 4.2.8 (Network Management Software). This affects an unknown functionality of the component Remote Configuration Handler. 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 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 (infinite loop or crash) by pointing the key file at the log file.

The weakness was shared 10/21/2015 as cisco-sa-20151021-ntp as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is uniquely identified as CVE-2015-7850 since 10/16/2015. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 88055 (AIX 6.1 TL 9 : ntp (IV79942) (deprecated)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family AIX 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 (107441), Tenable (88055), SecurityFocus (BID 77279†) and Vulnerability Center (SBV-53945†). Further details are available at talosintel.com. The entries VDB-78844, VDB-78845, VDB-78846 and VDB-78847 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

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: 88055
Nessus Name: AIX 6.1 TL 9 : ntp (IV79942) (deprecated)
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: 🔍
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 🔍
10/23/2015 +2 days 🔍
10/23/2015 +0 days 🔍
08/07/2017 +654 days 🔍
06/24/2022 +1782 days 🔍

Sourcesinfo

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

CVE: CVE-2015-7850 (🔍)
GCVE (CVE): GCVE-0-2015-7850
GCVE (VulDB): GCVE-100-78849

OVAL: 🔍

X-Force: 107441 - Network Time Protocol remote configuration functionality denial of service
SecurityFocus: 77279
SecurityTracker: 1033951
Vulnerability Center: 53945 - NTP before 4.2.8p4 Remote DoS Vulnerability in Network Time Protocol- CVE-2015-7850, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/23/2015 10:04
Updated: 06/24/2022 23:14
Changes: 10/23/2015 10:04 (85), 02/20/2018 10:24 (1), 06/24/2022 23:02 (4), 06/24/2022 23:14 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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