CVE-2020-24863

Public Exploit

Description

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory midnightbsd.org Vendor Advisory freebsd.org Vendor Advisory midnightbsd.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.midnightbsd.org/notes/ release notes vendor advisory
https://github.com/MidnightBSD/src/blob/1691c07ff4f27b97220a5d65e217341e477f4014/sys/kern/vfs_syscalls.c third party advisory exploit
http://www.midnightbsd.org/security/adv/MIDNIGHTBSD-SA-20:01.txt vendor advisory exploit
https://www.freebsd.org/security/advisories/FreeBSD-EN-20:18.getfsstat.asc patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-24863?
CVE-2020-24863 has been scored as a medium severity vulnerability.
How to fix CVE-2020-24863?
To fix CVE-2020-24863, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-24863 being actively exploited in the wild?
It is possible that CVE-2020-24863 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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