Apache Tomcat DoS Vulnerability - June19 (Linux)

Published: 2019-08-28 07:47:49
CVE Author: NIST National Vulnerability Database (NVD)

CVSS Base Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P

Detection Type:
Remote Banner Unreliable

Solution Type:
Vendor Patch

Summary:
Apache Tomcat is prone to a denial of service vulnerability.

Technical Details:
The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write. By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients are able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

Detection Method:
Checks if a vulnerable version is present on the target host.

Affected Versions:
Apache Tomcat versions 8.5.0 to 8.5.40 and 9.0.0.M1 to 9.0.19.

Recommendations:
Update to version 8.5.41, 9.0.20 or later.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2019-10072

SecurityFocus Bugtraq ID:

https://www.securityfocus.com/bid/108874

References:

https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a@%3Cannounce.tomcat.apache.org%3E

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Severity
Medium
CVSS Score
5.0

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