CVE-2020-7457 Race condition in FreeBSD
A race condition in the FreeBSD kernel's IPv6 socket option handler allows local attackers to trigger use-after-free, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-7457?
CVE-2020-7457 is a high-severity vulnerability in Freebsd Freebsd, published on 9 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.
Which versions are affected by CVE-2020-7457?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2020-7457?
No fix has been published for CVE-2020-7457 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-7457 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-7457 exists.
Public exploit code: 1 Metasploit module.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-jhq7-2279-q727.