oak up to 17.1.2 API Context.send path traversal

Summaryinfo

A vulnerability, which was classified as problematic, has been found in oak up to 17.1.2. Impacted is the function Context.send of the component API. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2024-49770. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in oak up to 17.1.2. It has been rated as problematic. This issue affects the function Context.send of the component API. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-35. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '.../...//' (doubled triple dot slash) sequences that can resolve to a location that is outside of that directory. Impacted is confidentiality. The summary by CVE is:

`oak` is a middleware framework for Deno's native HTTP server, Deno Deploy, Node.js 16.5 and later, Cloudflare Workers and Bun. By default `oak` does not allow transferring of hidden files with `Context.send` API. However, prior to version 17.1.3, this can be bypassed by encoding `/` as its URL encoded form `%2F`. For an attacker this has potential to read sensitive user data or to gain access to server secrets. Version 17.1.3 fixes the issue.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2024-49770 since 10/18/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version 17.1.3 eliminates this vulnerability.

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Productinfo

Name

• oak

Version

• 17.1.0
• 17.1.1
• 17.1.2

CPE 2.3info

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CPE 2.2info

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