CVE-2021-41079 vulnerability in Apache and Other Products
Published on September 16, 2021
Apache Tomcat DoS with unexpected TLS packet
Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2021-41079
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Affected Versions
Apache Software Foundation Apache Tomcat:- Version Apache Tomcat 8.5 8.5.0 to 8.5.63 is affected.
- Version Apache Tomcat 9 9.0.0-M1 to 9.0.43 is affected.
- Version Apache Tomcat 10 10.0.0-M1 to 10.0.2 is affected.
Exploit Probability
EPSS
0.08%
Percentile
23.29%
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.