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.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.8, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 20 products from apache, from debian, from canonical and 17 others, organizations running these solutions should prioritize assessment and patching.
Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2020-02-24T22:15:11.980
2024-11-21T05:11:38.730
Modified
CVSSv3.1: 4.8 (MEDIUM)
AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | apache | tomcat | ≤ 7.0.99 | Yes |
| Application | apache | tomcat | ≤ 8.5.50 | Yes |
| Application | apache | tomcat | ≤ 9.0.30 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Application | apache | tomcat | 9.0.0 | Yes |
| Operating System | debian | debian_linux | 8.0 | Yes |
| Operating System | debian | debian_linux | 9.0 | Yes |
| Operating System | debian | debian_linux | 10.0 | Yes |
| Operating System | canonical | ubuntu_linux | 16.04 | Yes |
| Operating System | opensuse | leap | 15.1 | Yes |
| Application | netapp | data_availability_services | - | Yes |
| Application | netapp | oncommand_system_manager | ≤ 3.1.3 | Yes |
| Application | oracle | agile_engineering_data_management | 6.2.1.0 | Yes |
| Application | oracle | agile_product_lifecycle_management | 9.3.3 | Yes |
| Application | oracle | agile_product_lifecycle_management | 9.3.5 | Yes |
| Application | oracle | agile_product_lifecycle_management | 9.3.6 | Yes |
| Application | oracle | communications_element_manager | 8.1.1 | Yes |
| Application | oracle | communications_element_manager | 8.2.0 | Yes |
| Application | oracle | communications_element_manager | 8.2.1 | Yes |
| Application | oracle | communications_instant_messaging_server | 10.0.1.4.0 | Yes |
| Application | oracle | health_sciences_empirica_inspections | 1.0.1.2 | Yes |
| Application | oracle | health_sciences_empirica_signal | 7.3.3 | Yes |
| Application | oracle | hospitality_guest_access | 4.2.0 | Yes |
| Application | oracle | hospitality_guest_access | 4.2.1 | Yes |
| Application | oracle | hyperion_infrastructure_technology | 11.1.2.4 | Yes |
| Application | oracle | instantis_enterprisetrack | ≤ 17.3 | Yes |
| Application | oracle | mysql_enterprise_monitor | ≤ 4.0.12 | Yes |
| Application | oracle | mysql_enterprise_monitor | ≤ 8.0.20 | Yes |
| Application | oracle | retail_order_broker | 15.0 | Yes |
| Application | oracle | siebel_ui_framework | ≤ 20.5 | Yes |
| Application | oracle | transportation_management | 6.3.7 | Yes |
| Application | oracle | workload_manager | 12.2.0.1 | Yes |
| Application | oracle | workload_manager | 18c | Yes |
| Application | oracle | workload_manager | 19c | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For apache's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.