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Add a new rule which detects when a file is created with os.Create but the configured permissions are less than 0666 #1020

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merged 2 commits into from
Sep 25, 2023

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It seems that the os.Create will create by default a file with 0666 permissions.

This should be detected when the configured permissions are less than 0666. By default will not detect this case
unless the more restrictive mode is configured.

fixes #1019

…t the configured permissions are less than 0666

It seems that the os.Create will create by default a file with 0666 permissions.

This should be detected when the configured permissions are less than 0666. By default will not detect this case
unless the more restrictive mode is configured.

Signed-off-by: Cosmin Cojocar <gcojocar@adobe.com>
Signed-off-by: Cosmin Cojocar <gcojocar@adobe.com>
@ccojocar ccojocar merged commit 4def3a4 into master Sep 25, 2023
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@ldez
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ldez commented Oct 9, 2023

Hello @ccojocar,

Is it expected to use a retire rule code (G307)?

gosec/README.md

Line 160 in 3952187

- G307: Poor file permissions used when creating a file with os.Create

gosec/README.md

Line 176 in 3952187

- G307: Deferring a method which returns an error - causing more inconvenience than fixing a security issue, despite the details from this [blog post](https://www.joeshaw.org/dont-defer-close-on-writable-files/)

@ccojocar ccojocar deleted the os-create-rule branch May 13, 2024 16:05
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G306 can be easily bypassed by os.Create
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