CVE-2020-24717 json
OpenZFS before 2.0.0-rc1, when used on FreeBSD, misinterprets group permissions as user permissions, as demonstrated by mode 0770 being equ…
published 2020-08-27 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-17428
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
OpenZFS before 2.0.0-rc1, when used on FreeBSD, misinterprets group permissions as user permissions, as demonstrated by mode 0770 being equivalent to mode 0777.
Patch / fix
- github.com/openzfs/zfs@716b53d commit
- jira.ixsystems.com/browse/NAS-107270 advisory
- reviews.freebsd.org/D26107 advisory
- github.com/openzfs/zfs/compare/zfs-0.8.4...zfs-2.0.0-rc1 advisory
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- jira.ixsystems.com https://jira.ixsystems.com/browse/NAS-107270 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.2 | AV:L/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-276 Incorrect Default Permissions
References
-
github.com
/openzfs/zfs/commit/716b53d0a14c72bda16c0872565dd1909757e73f
patch, third-party-advisory
-
jira.ixsystems.com
/browse/NAS-107270
exploit, issue-tracking, patch, third-party-advisory
-
reviews.freebsd.org
/D26107
issue-tracking, patch, third-party-advisory
-
github.com
/openzfs/zfs/compare/zfs-0.8.4...zfs-2.0.0-rc1
patch, third-party-advisory
Sources
- CVE List CVE-2020-24717
- NVD CVE-2020-24717
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