VDB-112335 · CVE-2017-15094 · Nessus 105198

PowerDNS Recursor up to 4.0.6 DNSSEC Parser resource management

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.
4.7	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in PowerDNS Recursor up to 4.0.6. This vulnerability affects unknown code of the component DNSSEC Parser. Performing a manipulation results in resource management. This vulnerability is known as CVE-2017-15094. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in PowerDNS Recursor up to 4.0.6 (Domain Name Software). It has been classified as problematic. This affects some unknown processing of the component DNSSEC Parser. 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:

An issue has been found in the DNSSEC parsing code of PowerDNS Recursor from 4.0.0 up to and including 4.0.6 leading to a memory leak when parsing specially crafted DNSSEC ECDSA keys. These keys are only parsed when validation is enabled by setting dnssec to a value other than off or process-no-validate (default).

The bug was discovered 11/27/2017. The weakness was published 01/23/2018 with FortiGuard Labs (Website). It is possible to read the advisory at doc.powerdns.com. This vulnerability is uniquely identified as CVE-2017-15094 since 10/08/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105198 (Fedora 26 : pdns-recursor (2017-1585789772)), 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277003 (Fedora Security Update for pdns-recursor (FEDORA-2017-81fe39ad9f)).

Upgrading 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 (105198) and SecurityFocus (BID 101982†). Similar entries are available at VDB-112334, VDB-112331, VDB-112332 and VDB-112333. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Domain Name Software

Vendor

PowerDNS

Name

Recursor

Version

License

free

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
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: 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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 105198
Nessus Name: Fedora 26 : pdns-recursor (2017-1585789772)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800644
OpenVAS Name: PowerDNS Recursor Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/08/2017 🔍
11/27/2017 +50 days 🔍
11/27/2017 +0 days 🔍
12/12/2017 +15 days 🔍
12/13/2017 +1 days 🔍
01/23/2018 +41 days 🔍
01/23/2018 +0 days 🔍
01/24/2018 +1 days 🔍
02/02/2023 +1835 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-1585789772
Researcher: everyman, Kees Monshouwer, Nixu, Chris Navarrete
Organization: FortiGuard Labs
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-15094 (🔍)
GCVE (CVE): GCVE-0-2017-15094
GCVE (VulDB): GCVE-100-112335
SecurityFocus: 101982 - PowerDNS Authoritative Server Module Multiple Security Vulnerabilities

See also: 🔍

Entryinfo

Created: 01/24/2018 07:59
Updated: 02/02/2023 13:15
Changes: 01/24/2018 07:59 (73), 12/27/2019 07:15 (7), 02/01/2021 14:41 (2), 02/02/2023 13:15 (3)
Complete: 🔍
Cache ID: 216::103