CVE-2020-7453 Information disclosure in FreeBSD
A missing null termination check in FreeBSD's jail_set allows a malicious jail superuser to read kernel memory via jail_get.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-7453?
CVE-2020-7453 is a medium-severity vulnerability in Freebsd Freebsd, published on 28 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-754
Which versions are affected by CVE-2020-7453?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2020-7453?
No fix has been published for CVE-2020-7453 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-7453 being exploited?
There is no known exploitation of CVE-2020-7453 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-329c-g8g4-89hm.