OpenRC up to 0.42.1 checkpath symlink

Summaryinfo

A vulnerability was found in OpenRC up to 0.42.1. It has been rated as critical. This impacts an unknown function of the component checkpath. The manipulation leads to symlink. This vulnerability is uniquely identified as CVE-2018-21269. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in OpenRC up to 0.42.1. This issue affects an unknown function of the component checkpath. The manipulation with an unknown input leads to a symlink vulnerability. Using CWE to declare the problem leads to CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 10/27/2020. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-21269. The exploitation is known to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• OpenRC

Version

• 0.42.0
• 0.42.1

Website

• Product: https://github.com/OpenRC/openrc/

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