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prionPRIOn knowledge basePRION:CVE-2020-1935
HistoryFeb 24, 2020 - 10:15 p.m.

Design/Logic Flaw

2020-02-2422:15:00
PRIOn knowledge base
www.prio-n.com
18

7.1 High

AI Score

Confidence

Low

0.002 Low

EPSS

Percentile

62.2%

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