Vulnerability identifier: #VU20992

Vulnerability risk: Medium

CVSSv3.1:

CVE-ID: CVE-2019-10072

CWE-ID:

Exploitation vector: Network

Exploit availability:

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incomplete fix for SB2019020812 when processing HTTP/2 requests. A remote attacker can perform denial of service attack by not sending WINDOW_UPDATE messages for the connection window (stream 0).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 9.0.0 - 9.0.19, 8.5.0 - 8.5.39

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Fixed software versions

CPE

• cpe:2.3:a:apache_foundation:apache_tomcat:9.0.18:*:*:*:*:*:*:*

External links
http://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a@%3Cannounce.tomcat.apache.org%3E

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?