CVE-2020-24863

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.

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:C

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:midnightbsd:midnightbsd::::::::
	cpe:2.3:a:midnightbsd:midnightbsd::::::::

Configuration 2 (hide)

cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:*

Information

Published : 2020-09-03 08:15

Updated : 2020-09-11 07:03

NVD link : CVE-2020-24863

Mitre link : CVE-2020-24863

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

freebsd

freebsd

midnightbsd

midnightbsd

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