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| Rule General Information |
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| Release Date: | 2020-11-10 | |
| Rule Name: | Apache Tomcat WebSocket Denial of Service Vulnerability (CVE-2020-13935) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| Description: | The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service. | |
| Impact: | An attacker can launch a denial of service attack by exploiting the vulnerability successfully. | |
| Affected OS: | Windows, Linux, Others | |
| Reference: | http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html https://kc.mcafee.com/corporate/index?page=content&id=SB10332 https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce.tomcat.apache.org%3E |
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| Solutions |
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| The vendors have released upgrade patches to fix vulnerabilities, please visit: https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%40%3Cannounce.tomcat.apache.org%3E |