High severity · published Apr 7, 2021
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…
7.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FR
Freebsd · Freebsd
before 11.4; 12.0 before 12.2; 11.4; 11.4; 11.4; 11.4; +17 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25584
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25584
Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210423-0009/
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