CVE-2024-6759 Information

Description

When mounting a remote filesystem using NFS the kernel did not sanitize remotely provided filenames for the path separator character /. This allows readdir(3) and related functions to return filesystem entries with names containing additional path components.

The lack of validation described above gives rise to a confused deputy problem. For example a program copying files from an NFS mount could be tricked into copying from outside the intended source directory and/or to a location outside the intended destination directory.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Reference

https://security.freebsd.org/advisories/FreeBSD-SA-24:07.nfsclient.asc

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

5.3