CVE-2017-10872 Denial of service in H2O

What is CVE-2017-10872?

CVE-2017-10872 is a medium-severity denial of service vulnerability in Kazuho Oku H2O, published on 22 Dec 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via unspecified vectors.

Weakness: CWE-118

Which versions are affected by CVE-2017-10872?

It affects 1 product.

Products include Dena H2o.

How do I fix CVE-2017-10872?

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-2017-10872 being exploited?

There is no known exploitation of CVE-2017-10872 in the wild and no public exploit code.

Other vulnerabilities in Kazuho Oku H2O

• CVE-2018-0608 Memory corruption in H2O Critical 9.8
• CVE-2016-7835 Use after free in H2O Critical 9.1
• CVE-2023-30847 H2O vulnerable to read from uninitialized pointer in the reverse proxy handler High 8.2
• CVE-2017-10868 Denial of service in H2O High 7.5
• CVE-2017-10869 Memory corruption in H2O High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2017-10872, GHSA-gq8c-8c44-g5xc.