CVE-2020-1935
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 3.1
- 4.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N - EPSS
- 9.4% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-25)
- CWE
- CWE-444
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:tomcat
- canonical:ubuntu_linux
- debian:debian_linux
- netapp:data_availability_services
- netapp:oncommand_system_manager
- opensuse:leap
- oracle:agile_engineering_data_management
- oracle:agile_product_lifecycle_management
- oracle:communications_element_manager
- oracle:communications_instant_messaging_server
- oracle:health_sciences_empirica_inspections
- oracle:health_sciences_empirica_signal
- oracle:hospitality_guest_access
- oracle:hyperion_infrastructure_technology
- oracle:instantis_enterprisetrack
- oracle:mysql_enterprise_monitor
- oracle:retail_order_broker
- oracle:siebel_ui_framework
- oracle:transportation_management
- oracle:workload_manager
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qxf4-chvg-4r8r | Maven | org.apache.tomcat.embed:tomcat-embed-core | <7.0.100 | 7.0.100 |
| GHSA-qxf4-chvg-4r8r | Maven | org.apache.tomcat.embed:tomcat-embed-core | >=8.0.0 <8.5.51 | 8.5.51 |
| GHSA-qxf4-chvg-4r8r | Maven | org.apache.tomcat.embed:tomcat-embed-core | >=9.0.0 <9.0.31 | 9.0.31 |
| GHSA-qxf4-chvg-4r8r | Maven | org.apache.tomcat:tomcat | <7.0.100 | 7.0.100 |
| GHSA-qxf4-chvg-4r8r | Maven | org.apache.tomcat:tomcat | >=8.0.0 <8.5.51 | 8.5.51 |
| GHSA-qxf4-chvg-4r8r | Maven | org.apache.tomcat:tomcat | >=9.0.0 <9.0.31 | 9.0.31 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
- https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E