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FreeBSD: VID-E261E71C-6250-11EE-8E38-002590C1F29C (CVE-2023-5369): FreeBSD -- copy_file_range insufficient capability rights check

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FreeBSD: VID-E261E71C-6250-11EE-8E38-002590C1F29C (CVE-2023-5369): FreeBSD -- copy_file_range insufficient capability rights check

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/03/2023
Created
10/05/2023
Added
10/04/2023
Modified
10/12/2023

Description

Before correction, the copy_file_range system call checked only for the CAP_READ and CAP_WRITE capabilities on the input and output file descriptors, respectively. Using an offset is logically equivalent to seeking, and the system call must additionally require the CAP_SEEK capability.

This incorrect privilege check enabled sandboxed processes with only read or write but no seek capability on a file descriptor to read data from or write data to an arbitrary location within the file corresponding to that file descriptor.

Solution(s)

  • freebsd-upgrade-base-13_2-release-p4

References

  • CVE-2023-5369

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