SB2016100103 - Format string error in h2o (Alpine package)



SB2016100103 - Format string error in h2o (Alpine package)

Published: October 1, 2016

Security Bulletin ID SB2016100103
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security 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.