5.5

CVE-2020-24863

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Midnightbsd ≫ Midnightbsd Version < 1.2.7
Midnightbsd ≫ Midnightbsd Version >= 1.3 <= 2020-08-19
Freebsd ≫ Freebsd Version <= 11.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.53% 0.407
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 4.9 3.9 6.9
AV:L/AC:L/Au:N/C:N/I:N/A:C
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://www.midnightbsd.org/notes/
Vendor Advisory
Release Notes
http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt
Vendor Advisory
Exploit
https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c
Third Party Advisory
Exploit
https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc
Patch
Vendor Advisory