CVE-2019-5611 Denial of service in FreeBSD
A missing check in FreeBSD's mbuf handling allows remote attackers to trigger a kernel panic, causing a denial of service.
- 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-2019-5611?
CVE-2019-5611 is a high-severity denial of service vulnerability in Freebsd Freebsd, published on 29 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In FreeBSD 12.0-STABLE before r350828, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r350829, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, a missing check in the function to arrange data in a chain of mbufs could cause data returned not to be contiguous. Extra checks in the IPv6 stack could catch the error condition and trigger a kernel panic, leading to a remote denial of service.
Weakness: CWE-20
Which versions are affected by CVE-2019-5611?
It affects 2 products.
Products include Freebsd Freebsd, Netapp Clustered Data Ontap.
How do I fix CVE-2019-5611?
No fix has been published for CVE-2019-5611 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-5611 being exploited?
There is no known exploitation of CVE-2019-5611 in the wild and no public exploit code.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-hhpm-q5q8-ppx2.