Http4s up to 0.21.16/0.21/0.22.0-M1/1.0.0-M13 Connection resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, was found in Http4s up to 0.21.16/0.21/0.22.0-M1/1.0.0-M13. This issue affects some unknown processing of the component Connection Handler. Such manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2021-21294. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Http4s up to 0.21.16/0.21/0.22.0-M1/1.0.0-M13 and classified as problematic. Affected by this issue is some unknown functionality of the component Connection 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.

The weakness was disclosed 02/03/2021. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-21294. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 0.21, 0.21.17, 0.22, 0.22.0-M2 or 1.0.0-M14 eliminates this vulnerability. Applying a patch 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

• Http4s

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
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.21.0
• 0.21.1
• 0.21.2
• 0.21.3
• 0.21.4
• 0.21.5
• 0.21.6
• 0.21.7
• 0.21.8
• 0.21.9
• 0.21.10
• 0.21.11
• 0.21.12
• 0.21.13
• 0.21.14
• 0.21.15
• 0.21.16
• 0.22.0-M1
• 1.0.0-M13

License

• open-source

Website

• Product: https://github.com/http4s/http4s/

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