Vulnerability in FreeBSD
CVE-2020-25584
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.
Vulnerability class: Race Condition
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (6.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- FreeBSD — versions 11.4, 12.2, 13.0
- FreeBSD — versions FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9
Weakness classification (CWE)
References
- security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc (Vendor Advisory)
- security.netapp.com/advisory/ntap-20210423-0009/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-25584?
- CVE-2020-25584 is a high-severity vulnerability in FreeBSD, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2021-04-07.
- How severe is CVE-2020-25584?
- High severity. CVSS v3 base score is 7.5 out of 10.