CVEvulnerability

CVE-2020-25584

7.5 HIGH Published 2021-04-07 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-04-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.2 MEDIUM — AV:L/AC:H/Au:N/C:C/I:C/A:C
Weaknesses
CWE-362

Description

In FreeBSD 13.0-STABLE before n245118, 12.2-STABLE before r369552, 11.4-STABLE before r369560, 13.0-RC5 before p1, 12.2-RELEASE before p6, and 11.4-RELEASE before p9, a superuser inside a FreeBSD jail configured with the non-default allow.mount permission could cause a race condition between the lookup of ".." and remounting a filesystem, allowing access to filesystem hierarchy outside of the jail.

Affected configurations

• freebsd freebsd (< 11.4) • freebsd freebsd (>= 12.0 < 12.2) • freebsd freebsd 11.4 • freebsd freebsd 12.2 • freebsd freebsd 13.0

Related

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References