Home/CVE/A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 th
CVE

CVE-2020-24863

A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 th

A memory corruption vulnerability was found in the kernel function kern_getfsstat in MidnightBSD before 1.2.7 and 1.3 through 2020-08-19, and FreeBSD through 11.4, that allows an attacker to trigger an invalid free and crash the system via a crafted size value in conjunction with an invalid mode.

MEDIUM · CVSS 5.5 EPSS 0.00098
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

3
midnightbsd< 1.2.7
midnightbsd>= 1.3 and <= 2020-08-19
freebsd<= 11.4
⚠

Public Exploits & PoCs

2
pocwww.midnightbsd.org · MIDNIGHTBSD-SA-20:01.txtwww.midnightbsd.org
pocgithub.com · vfs_syscalls.cgithub.com
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Sep 2020 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.ascPatchVendor Advisory
https://www.midnightbsd.org/notes/Release NotesVendor Advisory
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