Homepage

Improper Input Validation Affecting tomcat8-lib package, versions <0:8.0.39-1.67.amzn1

Severity

 Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.79% (82nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Improper Input Validation vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-AMZN201803-TOMCAT8LIB-1703640
  • published27 Sept 2021
  • disclosed20 Mar 2017
Report a new vulnerability Found a mistake?

Introduced: 20 Mar 2017

CVE-2016-6816  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 tomcat8-lib to version 0:8.0.39-1.67.amzn1 or higher.
This issue was patched in ALAS-2016-778.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat8-lib package and not the tomcat8-lib package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The code in Apache Tomcat 9.0.0.M1 to 9.0.0.M11, 8.5.0 to 8.5.6, 8.0.0.RC1 to 8.0.38, 7.0.0 to 7.0.72, and 6.0.0 to 6.0.47 that parsed the HTTP request line permitted invalid characters. This could be exploited, in conjunction with a proxy that also permitted the invalid characters but with a different interpretation, to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack and/or obtain sensitive information from requests other then their own.

References