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CVE-2020-25584

HIGH
7.5
CVSS Score
Published: April 7, 2021 at 02:43 PM UTC
Updated: June 17, 2026 at 03:06 AM UTC
1 product affected across 1 vendorFreeBSD

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Severity
HIGH7.5
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

FreeBSD· Freebsd
95%
v < 11.412.0 ≤ v < 12.211.411.4 beta111.4 p111.4 p211.4 p311.4 p411.4 p511.4 rc111.4 rc212.212.2 p112.2 p213.0 beta113.0 beta213.0 beta313.0 beta413.0 rc113.0 rc213.0 rc313.0 rc413.0 rc5FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9
Affected range stops below 11.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 12.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory
Source: [email protected]
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:10.jail_mount.asc
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210423-0009/

CVSS

7.5HIGH[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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