hamba avro up to 2.12.x Unmarshal resource consumption

Summaryinfo

A vulnerability categorized as problematic has been discovered in hamba avro up to 2.12.x. This issue affects the function Unmarshal. Such manipulation leads to resource consumption. This vulnerability is documented as CVE-2023-37475. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in hamba avro up to 2.12.x. Affected by this issue is the function Unmarshal. 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:

Hamba avro is a go lang encoder/decoder implementation of the avro codec specification. In affected versions a well-crafted string passed to avro's `github.com/hamba/avro/v2.Unmarshal()` can throw a `fatal error: runtime: out of memory` which is unrecoverable and can cause denial of service of the consumer of avro. The root cause of the issue is that avro uses part of the input to `Unmarshal()` to determine the size when creating a new slice and hence an attacker may consume arbitrary amounts of memory which in turn may cause the application to crash. This issue has been addressed in commit `b4a402f4` which has been included in release version `2.13.0`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was released 07/18/2023 as GHSA-9x44-9pgq-cf45. The advisory is available at github.com. This vulnerability is handled as CVE-2023-37475 since 07/06/2023. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 2.13.0 eliminates this vulnerability. Applying the patch b4a402f41cf44b6094b5131286830ba9bb1eb290 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• hamba

Name

• avro

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12

License

• open-source

Website

• Product: https://github.com/hamba/avro/

CPE 2.3info

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CPE 2.2info

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