Hydra up to 0.12.x input validation

Summaryinfo

A vulnerability classified as critical was found in Hydra up to 0.12.x. This vulnerability affects unknown code. The manipulation results in input validation. This vulnerability is reported as CVE-2023-42448. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Hydra up to 0.12.x. It has been classified as critical. Affected is an unknown function. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Hydra is the layer-two scalability solution for Cardano. Prior to version 0.13.0, the specification states that the contestation period in the datum of the UTxO at the head validator must stay unchanged as the state progresses from Open to Closed (Close transaction), but no such check appears to be performed in the `checkClose` function of the head validator. This would allow a malicious participant to modify the contestation deadline of the head to either allow them to fanout the head without giving another participant the chance to contest, or prevent any participant from ever redistributing the funds locked in the head via a fan-out. Version 0.13.0 contains a patch for this issue.

The weakness was disclosed 10/05/2023 as GHSA-mgcx-6p7h-5996. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-42448 since 09/08/2023. There are neither technical details nor an exploit publicly available.

Upgrading to version 0.13.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2f45529729e28254a62f7a7c8d6649066923ed1f 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.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Hydra

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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