CVE-2020-1935
- State
- Published
- Severity
- Not scored
- Published
- Feb 24, 2020
- Updated
- Oct 8, 2026
- Reserved
- Dec 2, 2019
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
Apache TomcatApache |
|
References
- [tomcat-announce] 20200224 [SECURITY] CVE-2020-1935 HTTP Request Smugglingmailing-list
- [debian-lts-announce] 20200304 [SECURITY] [DLA 2133-1] tomcat7 security updatemailing-list
- openSUSE-SU-2020:0345vendor-advisory
- [tomee-commits] 20200320 [jira] [Created] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 & CVE-2019-17569 vulnerabilitiesmailing-list
- [tomee-commits] 20200323 [jira] [Commented] (TOMEE-2790) TomEE plus(7.0.7) is affected by CVE-2020-1935 & CVE-2019-17569 vulnerabilitiesmailing-list
- DSA-4673vendor-advisory
- DSA-4680vendor-advisory
- [debian-lts-announce] 20200528 [SECURITY] [DLA 2209-1] tomcat8 security updatemailing-list
- https://www.oracle.com/security-alerts/cpujul2020.html
- https://security.netapp.com/advisory/ntap-20200327-0005/
- [tomcat-users] 20200724 CVE-2020-1935mailing-list
- [tomcat-users] 20200724 Re: CVE-2020-1935mailing-list
- [tomcat-users] 20200724 RE: CVE-2020-1935mailing-list
- [tomcat-users] 20200726 Re: CVE-2020-1935mailing-list
- [tomcat-users] 20200727 RE: CVE-2020-1935mailing-list
- USN-4448-1vendor-advisory
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.oracle.com/security-alerts/cpujan2021.html
- [tomcat-dev] 20210428 [Bug 65272] Problems proccessing HTTP request without CR in last versionsmailing-list
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