CVE-2020-1935

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.

References

https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E

https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html

https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Ccommits.tomee.apache.org%3E

https://security.netapp.com/advisory/ntap-20200327-0005/

https://www.debian.org/security/2020/dsa-4673

https://www.debian.org/security/2020/dsa-4680

https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html

https://www.oracle.com/security-alerts/cpujul2020.html

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://lists.apache.org/thread.html/[email protected]%3Cusers.tomcat.apache.org%3E

https://usn.ubuntu.com/4448-1/

https://www.oracle.com/security-alerts/cpuoct2020.html

https://www.oracle.com/security-alerts/cpujan2021.html

https://lists.apache.org/thread.html/[email protected]%3Cdev.tomcat.apache.org%3E

Details

Risk Information

CVSS v2

CVSS v3