SB2017051221 - Format string error in h2o.examp1e.net h2o
Published: May 12, 2017 Updated: July 28, 2020
Security Bulletin ID
SB2017051221
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Format string error (CVE-ID: CVE-2016-4864)
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.
Remediation
Install update from vendor's website.