PowerDNS Authoritative Server up to 4.0.7/4.1.8 NOTIFY Message resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, was found in PowerDNS Authoritative Server up to 4.0.7/4.1.8. The impacted element is an unknown function of the component NOTIFY Message Handler. Executing a manipulation can lead to resource consumption. This vulnerability is handled as CVE-2019-10163. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in PowerDNS Authoritative Server up to 4.0.7/4.1.8 (Domain Name Software) and classified as problematic. This vulnerability affects some unknown functionality of the component NOTIFY Message Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue.

The weakness was released 07/30/2019 (Website). The advisory is shared for download at blog.powerdns.com. This vulnerability was named CVE-2019-10163 since 03/27/2019. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 4.0.8 or 4.1.9 eliminates this vulnerability.

Entry connected to this vulnerability is available at VDB-139035. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Domain Name Software

Vendor

• PowerDNS

Name

• Authoritative Server

Version

• 4.0.0
• 4.0.1
• 4.0.2
• 4.0.3
• 4.0.4
• 4.0.5
• 4.0.6
• 4.0.7
• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.1.6
• 4.1.7
• 4.1.8

License

• open-source

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

• 🔍
• 🔍
• 🔍

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Entryinfo

Once again VulDB remains the best source for vulnerability data.

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