nsd up to 4.1.10 Zone Transfer /tmp resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in nsd up to 4.1.10. This impacts an unknown function of the file /tmp of the component Zone Transfer Handler. Performing a manipulation results in resource management. This vulnerability is known as CVE-2016-6173. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in nsd up to 4.1.10 (Domain Name Software). It has been classified as problematic. This affects an unknown code of the file /tmp of the component Zone Transfer Handler. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

NSD before 4.1.11 allows remote DNS master servers to cause a denial of service (/tmp disk consumption and slave server crash) via a zone transfer with unlimited data.

The bug was discovered 07/06/2016. The weakness was published 02/09/2017 (Website). The advisory is shared at nlnetlabs.nl. This vulnerability is uniquely identified as CVE-2016-6173 since 07/06/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 97 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 93982 (Fedora 24 : nsd (2016-e1d4972701)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Upgrading to version 4.1.11 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (93982) and SecurityFocus (BID 91678†). Similar entries are available at VDB-92197 and VDB-96764. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93982
Nessus Name: Fedora 24 : nsd (2016-e1d4972701)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63881
OpenVAS Name: Fedora Update for nsd FEDORA-2016-9960d370f7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: nsd 4.1.11

Timelineinfo

07/06/2016 🔍
07/06/2016 +0 days 🔍
07/07/2016 +1 days 🔍
10/11/2016 +96 days 🔍
10/12/2016 +1 days 🔍
02/09/2017 +120 days 🔍
02/09/2017 +0 days 🔍
02/09/2017 +0 days 🔍
11/12/2022 +2102 days 🔍

Sourcesinfo

Advisory: nlnetlabs.nl
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6173 (🔍)
GCVE (CVE): GCVE-0-2016-6173
GCVE (VulDB): GCVE-100-96765
SecurityFocus: 91678 - Multiple DNS Servers Remote Denial of Service Vulnerability
OSVDB: - CVE-2016-6173 - NSD - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 02/09/2017 19:32
Updated: 11/12/2022 14:05
Changes: 02/09/2017 19:32 (64), 08/12/2020 20:58 (6), 11/12/2022 14:05 (13)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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