Format string error in h2o - CVE-2016-4864
Published: May 12, 2017 / Updated: July 28, 2020
Vulnerability identifier: #VU32243
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-4864
CWE-ID: CWE-134
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: h2o.examp1e.net
Affected software:
h2o
h2o
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
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.
How to mitigate CVE-2016-4864
Install update from vendor's website.