Bug 2299281 (CVE-2024-36137)

Summary: CVE-2024-36137 nodejs: fs.fchown/fchmod bypasses permission model
Product: [Other] Security Response Reporter: Robb Gatica <rgatica>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: caswilli, hhorak, kaycoth
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Hardware: All   
OS: Linux   
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A flaw was found in Node.js, affecting users of the experimental permission model when the --allow-fs-write flag is used. The Node.js Permission Model does not operate on file descriptors. However, operations such as fs.fchown or fs.fchmod can use a "read-only" file descriptor to change the owner and permissions of a file.
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Bug Depends On: 2299331    
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Description Robb Gatica 2024-07-22 14:05:18 UTC 
A vulnerability has been identified in Node.js, affecting users of the experimental permission model when the --allow-fs-write flag is used.

Node.js Permission Model do not operate on file descriptors, however, operations such as fs.fchown or fs.fchmod can use a "read-only" file descriptor to change the owner and permissions of a file.

This vulnerability affects all users using the experimental permission model in Node.js 20 and Node.js 22.
Comment 2 errata-xmlrpc 2024-08-26 08:06:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:5815 https://access.redhat.com/errata/RHSA-2024:5815
Comment 3 errata-xmlrpc 2024-08-26 08:29:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:5814 https://access.redhat.com/errata/RHSA-2024:5814