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Ubuntu Security Notice USN-4128-2
September 18, 2019
tomcat9 vulnerabilities
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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/tomcat9/9.0.16-3ubuntu0.18.04.1
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