CVE-2016-4864

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.60% Top 20%
Third-Party Advisory jvn.jp Third-Party Advisory github.com
Affected: Kazuho Oku H2O
Published at:
Updated at:

References

Link Tags
https://github.com/h2o/h2o/issues/1077 third party advisory patch
https://jvn.jp/en/jp/JVN94779084/index.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2016-4864?
CVE-2016-4864 has been scored as a high severity vulnerability.
How to fix CVE-2016-4864?
To fix CVE-2016-4864, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-4864 being actively exploited in the wild?
It is possible that CVE-2016-4864 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-4864?
CVE-2016-4864 affects Kazuho Oku H2O.
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