CVE-2020-25584: Race Condition
First published: Wed Apr 07 2021(Updated: )
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.
Credit: secteam@freebsd.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD FreeBSD | <11.4 | |
| FreeBSD FreeBSD | >=12.0<12.2 | |
| FreeBSD FreeBSD | =11.4 | |
| FreeBSD FreeBSD | =11.4-beta1 | |
| FreeBSD FreeBSD | =11.4-p1 | |
| FreeBSD FreeBSD | =11.4-p2 | |
| FreeBSD FreeBSD | =11.4-p3 | |
| FreeBSD FreeBSD | =11.4-p4 | |
| FreeBSD FreeBSD | =11.4-p5 | |
| FreeBSD FreeBSD | =11.4-rc1 | |
| FreeBSD FreeBSD | =11.4-rc2 | |
| FreeBSD FreeBSD | =12.2 | |
| FreeBSD FreeBSD | =12.2-p1 | |
| FreeBSD FreeBSD | =12.2-p2 | |
| FreeBSD FreeBSD | =13.0-beta1 | |
| FreeBSD FreeBSD | =13.0-beta2 | |
| FreeBSD FreeBSD | =13.0-beta3 | |
| FreeBSD FreeBSD | =13.0-beta4 | |
| FreeBSD FreeBSD | =13.0-rc1 | |
| FreeBSD FreeBSD | =13.0-rc2 | |
| FreeBSD FreeBSD | =13.0-rc3 | |
| FreeBSD FreeBSD | =13.0-rc4 | |
| FreeBSD FreeBSD | =13.0-rc5 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-25584?
CVE-2020-25584 is a vulnerability in FreeBSD that allows a superuser inside a FreeBSD jail with the non-default allow.mount permission to cause a race condition.
What is the severity of CVE-2020-25584?
CVE-2020-25584 has a severity level of 7.5 (High).
Which versions of FreeBSD are affected by CVE-2020-25584?
FreeBSD versions 11.4-RELEASE before p9, 11.4-STABLE before r369560, 12.2-RELEASE before p6, 12.2-STABLE before r369552, and 13.0-STABLE before n245118 are affected by CVE-2020-25584.
How can I fix CVE-2020-25584?
To fix CVE-2020-25584, it is recommended to update to FreeBSD versions that include the relevant patches.
Where can I find more information about CVE-2020-25584?
You can find more information about CVE-2020-25584 in the advisories provided by FreeBSD and NetApp.
- collector/nvd-index
- agent/weakness
- agent/references
- agent/tags
- agent/severity
- agent/description
- agent/author
- agent/type
- agent/event
- agent/softwarecombine
- agent/last-modified-date
- agent/first-publish-date
- vendor/freebsd
- canonical/freebsd freebsd
- version/freebsd freebsd/12.0
- version/freebsd freebsd/11.4
- version/freebsd freebsd/11.4-beta1
- version/freebsd freebsd/11.4-p1
- version/freebsd freebsd/11.4-p2
- version/freebsd freebsd/11.4-p3
- version/freebsd freebsd/11.4-p4
- version/freebsd freebsd/11.4-p5
- version/freebsd freebsd/11.4-rc1
- version/freebsd freebsd/11.4-rc2
- version/freebsd freebsd/12.2
- version/freebsd freebsd/12.2-p1
- version/freebsd freebsd/12.2-p2
- version/freebsd freebsd/13.0-beta1
- version/freebsd freebsd/13.0-beta2
- version/freebsd freebsd/13.0-beta3
- version/freebsd freebsd/13.0-beta4
- version/freebsd freebsd/13.0-rc1
- version/freebsd freebsd/13.0-rc2
- version/freebsd freebsd/13.0-rc3
- version/freebsd freebsd/13.0-rc4
- version/freebsd freebsd/13.0-rc5