CVE-2023-5369 copy_file_range insufficient capability rights check

2023-10-0403:48:53

CWE-273

freebsd

www.cve.org

cve-2023-5369

copy_file_range

privilege check

sandboxed processes

seek capability

file descriptor

0.0004 Low

EPSS

Percentile

9.0%

JSON

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.

CNA Affected

[
  {
    "defaultStatus": "unknown",
    "modules": [
      "capsicum"
    ],
    "product": "FreeBSD",
    "vendor": "FreeBSD",
    "versions": [
      {
        "lessThan": "p4",
        "status": "affected",
        "version": "13.2-RELEASE",
        "versionType": "release"
      }
    ]
  }
]