A vulnerability in Apache Tomcat allows an attacker to remotely trigger a denial of service. An error introduced as part of a change to improve error handling during non-blocking I/O meant that the error flag associated with the Request object was not reset between requests. This meant that once a non-blocking I/O error occurred, all future requests handled by that request object would fail. Users were able to trigger non-blocking I/O errors, e.g. by dropping a connection, thereby creating the possibility of triggering a DoS. Applications that do not use non-blocking I/O are not exposed to this vulnerability. This issue affects Apache Tomcat 10.0.3 to 10.0.4; 9.0.44; 8.5.64.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 3 products from apache, from mcafee, from oracle organizations running these solutions should prioritize assessment and patching.
Reported in 2021, 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.
2021-07-12T15:15:08.333
2024-11-21T06:04:20.727
Modified
CVSSv3.1: 7.5 (HIGH)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | apache | tomcat | 8.5.64 | Yes |
| Application | apache | tomcat | 9.0.44 | Yes |
| Application | apache | tomcat | 10.0.3 | Yes |
| Application | apache | tomcat | 10.0.4 | Yes |
| Application | mcafee | epolicy_orchestrator | < 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | mcafee | epolicy_orchestrator | 5.10.0 | Yes |
| Application | oracle | big_data_spatial_and_graph | < 23.1 | 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.