RCE in Freebsd

CVE-2023-5368

On an msdosfs filesystem, the 'truncate' or 'ftruncate' system calls under certain circumstances populate the additional space in the file with unallocated data from the underlying disk device, rather than zero bytes. This may permit a user with write access to files on a msdosfs filesystem to read unintended data (e.g. from a previously deleted file).

EPSS: 0.005 (42.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

  • Freebsd — versions 13.2, 13.2-RELEASE, 12.4

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-5368?
CVE-2023-5368 is a medium-severity vulnerability in Freebsd, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.5/10. Published 2023-10-04.
How severe is CVE-2023-5368?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2023-5368 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.