CVE-2020-7452 Memory corruption in FreeBSD
Privileged users in a vnet jail can panic the host or execute arbitrary kernel code via incorrect pointer use in the epair module.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-7452?
CVE-2020-7452 is a critical memory corruption vulnerability in Freebsd Freebsd, published on 28 Apr 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
In FreeBSD 12.1-STABLE before r357490, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r357489, and 11.3-RELEASE before 11.3-RELEASE-p7, incorrect use of a user-controlled pointer in the epair virtual network module allowed vnet jailed privileged users to panic the host system and potentially execute arbitrary code in the kernel.
Weakness: CWE-119
Which versions are affected by CVE-2020-7452?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2020-7452?
No fix has been published for CVE-2020-7452 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-7452 being exploited?
There is no known exploitation of CVE-2020-7452 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-fm4q-8fww-vpwr.