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Mageia: MGASA-2018-0479 Critical: Tomcat Overflow & CORS Warning

mageia
Calendar Grey December 9, 2018
Dist Mageia Esm H88
Mageia security notice MGASA-2018-0480 addresses severe flaws found in Apache Tomcat, including risks of Denial of Service and potential misconfigurations.
An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service (CVE-2018-1336)

Summary

An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service (CVE-2018-1336).
The defaults settings for the CORS filter are insecure and enable supportsCredentials for all origins. It is expected that users of the CORS filter will have configured it appropriately for their environment rather than using it in the default configuration. Therefore, it is expected that most users will not be impacted by this issue (CVE-2018-8014).
The host name verification when using TLS with the WebSocket client was missing. It is now enabled by default (CVE-2018-8034).
When the default servlet returned a redirect to a directory (e.g. redirecting to /foo/ when the user requested /foo) a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice (CVE-2018-11784).

References

- https://bugs.mageia.org/show_bug.cgi?id=23045

- https://tomcat.apache.org/security-8.html

- https://tomcat.apache.org/security-8.html

- https://tomcat.apache.org/security-8.html

- https://www.cve.org/CVERecord?id=CVE-2018-1336

- https://www.cve.org/CVERecord?id=CVE-2018-8014

- https://www.cve.org/CVERecord?id=CVE-2018-8034

- https://www.cve.org/CVERecord?id=CVE-2018-11784

Topics%20covered

Topics Covered

security advisory denial of service critical Tomcat Mageia CORS filter

Resolution

SRPMS

- 6/core/tomcat-8.0.53-1.mga6

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 09 Dec 2018
URL: https://advisories.mageia.org/MGASA-2018-0479.html
Type: security
CVE: CVE-2018-1336, CVE-2018-8014, CVE-2018-8034, CVE-2018-11784

Topics%20covered

Topics Covered

security advisory denial of service critical Tomcat Mageia CORS filter

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