CVE-2020-1935
Severity
4.8MEDIUM
EPSS
1.4%
top 19.81%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 24
Latest updateAug 4
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NExploitability: 2.2 | Impact: 2.5
Affected Packages22 packages
Also affects: Debian Linux 10.0, 8.0, 9.0, Ubuntu Linux 16.04
🔴Vulnerability Details
5📋Vendor Advisories
4💬Community
1Bugzilla▶
CVE-2020-1935 tomcat: Mishandling of Transfer-Encoding header allows for HTTP request smuggling↗2020-02-25