Vulnerability in Dena H2o
CVE-2016-4817
lib/http2/connection.c in H2O before 1.7.3 and 2.x before 2.0.0-beta5 mishandles HTTP/2 disconnection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly execute arbitrary code via a crafted packet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.044 (91.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.044 · newest: 0.044 · change: 0.000
Affected products
References
- github.com/h2o/h2o/commit/1c0808d580da09fdec5a9a74ff09e103ea058dd4
- jvn.jp/en/jp/JVN87859762/index.html (Vendor Advisory, third-party-advisory)
- github.com/h2o/h2o/pull/920 (Vendor Advisory)
- jvndb.jvn.jp/jvndb/JVNDB-2016-000091 (Vendor Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2016-4817?
- CVE-2016-4817 is a high-severity vulnerability in Dena H2o. CVSS score: 7.5/10. Published 2016-06-19.
- How severe is CVE-2016-4817?
- High severity. CVSS v3 base score is 7.5 out of 10.