CVE-2018-6916 Use after free in FreeBSD
A use-after-free vulnerability in the FreeBSD kernel IPsec AH handling code allows attackers to cause a system crash or unpredictable results.
- 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-2018-6916?
CVE-2018-6916 is a critical use after free vulnerability in Freebsd Freebsd, published on 9 Mar 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p7, 10.4-STABLE, 10.4-RELEASE-p7, and 10.3-RELEASE-p28, the kernel does not properly validate IPsec packets coming from a trusted host. Additionally, a use-after-free vulnerability exists in the IPsec AH handling code. This issue could cause a system crash or other unpredictable results.
Weakness: CWE-416
Which versions are affected by CVE-2018-6916?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2018-6916?
No fix has been published for CVE-2018-6916 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2018-6916 being exploited?
There is no known exploitation of CVE-2018-6916 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-mvc8-6h45-px2q.