Race condition in FreeBSD
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | FreeBSD | FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9 | — | No fix listed | CNA |
- FreeBSD Vendor— Affected FreeBSD 12.2-RELEASE before p6, 11.4-RELEASE before p9 Fixed in — No fix listed CNA
CPE configurations NVD · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* | before 11.4; 12.0 to before 12.2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* | 11.4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:* | 11.4 beta1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* | 11.4 p1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* | 11.4 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:* | 11.4 p3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:* | 11.4 p4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:* | 11.4 p5 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:rc1:*:*:*:*:*:* | 11.4 rc1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:* | 11.4 rc2 | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* Versions before 11.4; 12.0 to before 12.2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:* Versions 11.4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:* Versions 11.4 beta1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p1:*:*:*:*:*:* Versions 11.4 p1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p2:*:*:*:*:*:* Versions 11.4 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p3:*:*:*:*:*:* Versions 11.4 p3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p4:*:*:*:*:*:* Versions 11.4 p4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:p5:*:*:*:*:*:* Versions 11.4 p5 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:rc1:*:*:*:*:*:* Versions 11.4 rc1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:* Versions 11.4 rc2 Vulnerable ·FreeBSD
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* | 12.2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* | 12.2 p1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:* | 12.2 p2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:* | 13.0 beta1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:* | 13.0 beta2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:* | 13.0 beta3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:* | 13.0 beta4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:* | 13.0 rc1 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:* | 13.0 rc2 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:* | 13.0 rc3 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:* | 13.0 rc4 | Vulnerable | FreeBSD |
| cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:* | 13.0 rc5 | Vulnerable | FreeBSD |
- cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:* Versions 12.2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:* Versions 12.2 p1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:* Versions 12.2 p2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:beta1:*:*:*:*:*:* Versions 13.0 beta1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:beta2:*:*:*:*:*:* Versions 13.0 beta2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:beta3:*:*:*:*:*:* Versions 13.0 beta3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:beta4:*:*:*:*:*:* Versions 13.0 beta4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:rc1:*:*:*:*:*:* Versions 13.0 rc1 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:rc2:*:*:*:*:*:* Versions 13.0 rc2 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:* Versions 13.0 rc3 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:* Versions 13.0 rc4 Vulnerable ·FreeBSD
- cpe:2.3:o:freebsd:freebsd:13.0:rc5:*:*:*:*:*:* Versions 13.0 rc5 Vulnerable ·FreeBSD
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-25584
- 2026-10-03 Alias added: GHSA-54rh-2mjp-cvmq
References
More Freebsd vulnerabilities
- TI-2011-04182 Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT… CVSS 2.0HIGH 10.0
- TI-2007-03684 Integer overflow in print-bgp.c in the BGP dissector in tcpdump 3.9.6 and earlier allows… CVSS 3.1CRITICAL 9.8
- TI-2002-00376 Integer overflow in xdr_array function in RPC servers for operating systems that use… CVSS 3.1CRITICAL 9.8
- TI-2024-05929 Openssh: regresshion - race condition in ssh allows rce/dos CVSS 3.1HIGH 8.1
- TI-2003-00437 Off-by-one error in the fb_realpath() function, as derived from the realpath function in… CVSS 3.1CRITICAL 9.8
- TI-2003-00642 The prescan function in Sendmail 8.12.9 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 10.0
Sources
- CVE-2020-25584 · CVE Program
- CVE-2020-25584 · NVD
- FIRST EPSS
- GHSA-54rh-2mjp-cvmq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences