---
title: "CVE-2019-10072\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-10072?format=md
keywords: index, follow
---

# CVE-2019-10072

Publication date 21 June 2019

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2019-10072?format=md#impact-score)

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## Description

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2
connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to
9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW\_UPDATE messages for the
connection window (stream 0) clients were able to cause server-side threads
to block eventually leading to thread exhaustion and a DoS.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| tomcat8 | 19.04 disco | Not in release |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Fixed 8.5.39-1ubuntu1~18.04.3 |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not in release |
| tomcat9 | 19.04 disco | Fixed 9.0.16-3ubuntu0.19.04.1 |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Fixed 9.0.16-3ubuntu0.18.04.1 |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2019-10072?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| tomcat8 | * Upstream:   [0bcd69c](https://github.com/apache/tomcat/commit/0bcd69c) * Upstream:   [8d14c6f](https://github.com/apache/tomcat/commit/8d14c6f) |
| tomcat9 | * Upstream:   [7f748eb](https://github.com/apache/tomcat/commit/7f748eb) * Upstream:   [ada725a](https://github.com/apache/tomcat/commit/ada725a) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10072)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-10072)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-10072)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-10072)

### Related Ubuntu Security Notices (USN)

+ [USN-4128-2](https://usn.ubuntu.com/USN-4128-2)
+ Tomcat vulnerabilities
+ 18 September 2019

+ [USN-4128-1](https://usn.ubuntu.com/USN-4128-1)
+ Tomcat vulnerabilities
+ 10 September 2019

### Other references

* <https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a@%3Cannounce.tomcat.apache.org%3E>
* <http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.20>
* <http://tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.41>
* <https://www.cve.org/CVERecord?id=CVE-2019-10072>