Vulnerability in Dena H2o
CVE-2016-4864
H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy.
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: 0.018 (77.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Dena H2o — versions 2.1.0
- Kazuho Oku H2o — versions versions 2.1.0-beta2 and earlier, versions 2.0.3 and earlier
Weakness classification (CWE)
References
- github.com/h2o/h2o/issues/1077 (Patch, Third Party Advisory)
- jvn.jp/en/jp/JVN94779084/index.html (VDB Entry, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2016-4864?
- CVE-2016-4864 is a high-severity vulnerability in Dena H2o, classified under Use of Externally-Controlled Format String. CVSS score: 7.5/10. Published 2017-05-12.
- How severe is CVE-2016-4864?
- High severity. CVSS v3 base score is 7.5 out of 10.