CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.4$0-$5k0.00

A vulnerability has been found in ldns 1.7.0 and classified as critical. Affected by this vulnerability is some unknown processing of the file parse.c. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.

The bug was discovered 04/27/2015. The weakness was presented 11/17/2017 (Website). The advisory is shared at nlnetlabs.nl. This vulnerability is known as CVE-2017-1000231 since 11/16/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 934 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104784 (Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : ldns vulnerabilities (USN-3491-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196981 (Ubuntu Security Notification for Ldns Vulnerabilities (USN-3491-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (104784). See 72881 and 109634 for similar entries.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Double free
CWE: CWE-415 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104784
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : ldns vulnerabilities (USN-3491-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65105
OpenVAS Name: Ubuntu Update for ldns USN-3491-1
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: 🔍

Timelineinfo

05/03/2014 🔍
04/27/2015 +359 days 🔍
11/16/2017 +934 days 🔍
11/16/2017 +0 days 🔍
11/17/2017 +1 days 🔍
11/18/2017 +1 days 🔍
11/22/2017 +4 days 🔍
11/27/2017 +5 days 🔍
01/10/2023 +1870 days 🔍

Sourcesinfo

Advisory: USN-3491-1
Researcher: Leon Weber
Status: Confirmed

CVE: CVE-2017-1000231 (🔍)
SecurityFocus: 67200 - ldns CVE-2014-3209 Local Insecure File Permissions Vulnerability

See also: 🔍

Entryinfo

Created: 11/18/2017 08:53
Updated: 01/10/2023 19:04
Changes: 11/18/2017 08:53 (74), 12/08/2019 09:49 (5), 01/24/2021 11:27 (2), 01/10/2023 18:57 (3), 01/10/2023 19:04 (1)
Complete: 🔍

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