CVE-2017-10868 Denial of service in H2O
Remote attackers can cause a denial of service in the H2O web server by sending specially crafted HTTP/1 headers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-10868?
CVE-2017-10868 is a high-severity denial of service vulnerability in Kazuho Oku H2O, published on 22 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
H2O version 2.2.2 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/1 header.
Weakness: CWE-20
Which versions are affected by CVE-2017-10868?
It affects 1 product.
Products include Dena H2o.
How do I fix CVE-2017-10868?
Upgrade to a fixed version.
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-2017-10868 being exploited?
There is no known exploitation of CVE-2017-10868 in the wild and no public exploit code.
Other vulnerabilities in Kazuho Oku H2O
Sources
Also known as DEBIAN-CVE-2017-10868, GHSA-p9v4-5fvf-9qmw.