HTTP Request Smuggling Affecting tomcat8-jsp-2.3-api package, versions <0:8.5.51-1.83.amzn1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.24% (63rd percentile)

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  • Snyk IDSNYK-AMZN201803-TOMCAT8JSP23API-1722694
  • published27 Sept 2021
  • disclosed24 Feb 2020

Introduced: 24 Feb 2020

CVE-2020-1935  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 tomcat8-jsp-2.3-api to version 0:8.5.51-1.83.amzn1 or higher.
This issue was patched in ALAS-2020-1353.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat8-jsp-2.3-api package and not the tomcat8-jsp-2.3-api package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.

References

CVSS Scores

version 3.1