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Ubuntu Security Notice USN-4128-2

Ubuntu Security Notice USN-4128-2
Posted Sep 18, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4128-2 - It was discovered that the Tomcat 9 SSI printenv command echoed user provided data without escaping it. An attacker could possibly use this issue to perform an XSS attack. It was discovered that Tomcat 9 did not address HTTP/2 connection window exhaustion on write while addressing CVE-2019-0199. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, web, denial of service
systems | linux, ubuntu
advisories | CVE-2019-0221, CVE-2019-10072
MD5 | 0a22d2b7cc035c57d90e5de24b7d1228

Ubuntu Security Notice USN-4128-2

Change Mirror Download
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Ubuntu Security Notice USN-4128-2
September 18, 2019

tomcat9 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in Tomcat 9.

Software Description:
- tomcat9: Servlet and JSP engine

Details:

It was discovered that the Tomcat 9 SSI printenv command echoed user
provided data without escaping it. An attacker could possibly use this
issue to perform an XSS attack. (CVE-2019-0221)

It was discovered that Tomcat 9 did not address HTTP/2 connection window
exhaustion on write while addressing CVE-2019-0199. An attacker could
possibly use this issue to cause a denial of service. (CVE-2019-10072)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.04:
libtomcat9-java 9.0.16-3ubuntu0.19.04.1
tomcat9 9.0.16-3ubuntu0.19.04.1

Ubuntu 18.04 LTS:
libtomcat9-java 9.0.16-3ubuntu0.18.04.1
tomcat9 9.0.16-3ubuntu0.18.04.1

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4128-2
https://usn.ubuntu.com/4128-1
CVE-2019-0221, CVE-2019-10072

Package Information:
https://launchpad.net/ubuntu/+source/tomcat9/9.0.16-3ubuntu0.19.04.1
<https://launchpad.net/ubuntu/+source/tomcat9/9.0.16-3ubuntu0.19.04.1>
https://launchpad.net/ubuntu/+source/tomcat9/9.0.16-3ubuntu0.18.04.1
<https://launchpad.net/ubuntu/+source/tomcat9/9.0.16-3ubuntu0.18.04.1>
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