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CVE
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CVE-2020-25584Date: (C)2021-04-08   (M)2023-12-22


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 Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.5CVSS Score : 6.2
Exploit Score: 0.8Exploit Score: 1.9
Impact Score: 6.0Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: HIGHAccess Complexity: HIGH
Privileges Required: HIGHAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: CHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc
https://security.netapp.com/advisory/ntap-20210423-0009/

CPE    8
cpe:/o:freebsd:freebsd
cpe:/o:freebsd:freebsd:11.4:rc1
cpe:/o:freebsd:freebsd:11.4:rc2
cpe:/o:freebsd:freebsd:13.0:rc3
...
CWE    1
CWE-362

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