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CVE-2021-30639
CVE ID
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CVE-2021-30639
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
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.
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CVSS V3 Severity and Metrics
General Information
Vendors
- apache,
- mcafee,
- oracle
Products
- big data spatial and graph,
- epolicy orchestrator,
- epolicy orchestrator 5.10.0,
- tomcat 10.0.3,
- tomcat 10.0.4,
- tomcat 8.5.64,
- tomcat 9.0.44
References
Advisory
Additional Info
Technical Analysis
Report as Exploited in the Wild
CVE ID
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