ISC BIND up to 9.16.36/9.18.10/9.19.8 UPDATE Message resource consumption

Summaryinfo

A vulnerability was found in ISC BIND up to 9.16.36/9.18.10/9.19.8. It has been declared as problematic. This issue affects some unknown processing of the component UPDATE Message Handler. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2022-3094. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in ISC BIND up to 9.16.36/9.18.10/9.19.8 (Domain Name Software) and classified as problematic. Affected by this issue is some unknown processing of the component UPDATE Message Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:

Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. Therefore it is only likely to be possible to degrade or stop `named` by sending a flood of unaccepted dynamic updates comparable in magnitude to a query flood intended to achieve the same detrimental outcome. BIND 9.11 and earlier branches are also affected, but through exhaustion of internal resources rather than memory constraints. This may reduce performance but should not be a significant problem for most servers. Therefore we don't intend to address this for BIND versions prior to BIND 9.16. This issue affects BIND 9 versions 9.16.0 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.8-S1 through 9.16.36-S1.

The weakness was shared 01/27/2023. The advisory is shared for download at kb.isc.org. This vulnerability is handled as CVE-2022-3094 since 09/02/2022. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 213674 (Amazon Linux 2 : bind (ALAS-2025-2729)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 9.16.37, 9.18.11 or 9.19.9 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (213674). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Domain Name Software

Vendor

• ISC

Name

• BIND

Version

• 9.16.0
• 9.16.1
• 9.16.2
• 9.16.3
• 9.16.4
• 9.16.5
• 9.16.6
• 9.16.7
• 9.16.8
• 9.16.9
• 9.16.10
• 9.16.11
• 9.16.12
• 9.16.13
• 9.16.14
• 9.16.15
• 9.16.16
• 9.16.17
• 9.16.18
• 9.16.19
• 9.16.20
• 9.16.21
• 9.16.22
• 9.16.23
• 9.16.24
• 9.16.25
• 9.16.26
• 9.16.27
• 9.16.28
• 9.16.29
• 9.16.30
• 9.16.31
• 9.16.32
• 9.16.33
• 9.16.34
• 9.16.35
• 9.16.36
• 9.18.0
• 9.18.1
• 9.18.2
• 9.18.3
• 9.18.4
• 9.18.5
• 9.18.6
• 9.18.7
• 9.18.8
• 9.18.9
• 9.18.10
• 9.19.0
• 9.19.1
• 9.19.2
• 9.19.3
• 9.19.4
• 9.19.5
• 9.19.6
• 9.19.7
• 9.19.8

License

• open-source

Website

• Vendor: https://www.isc.org/

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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