CVE-2020-7453

Description

In FreeBSD 12.1-STABLE before r359021, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r359020, and 11.3-RELEASE before 11.3-RELEASE-p7, a missing null termination check in the jail_set configuration option "osrelease" may return more bytes with a subsequent jail_get system call allowing a malicious jail superuser with permission to create nested jails to read kernel memory.

Category

6.0
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.06%
Vendor Advisory FreeBSD.org
Affected: n/a FreeBSD
Published at:
Updated at:

References

Link Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:08.jail.asc patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-7453?
CVE-2020-7453 has been scored as a medium severity vulnerability.
How to fix CVE-2020-7453?
To fix CVE-2020-7453, 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-2020-7453 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-7453 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-7453?
CVE-2020-7453 affects n/a FreeBSD.
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