Aniket Nandkishor Kulkarni discovered that in tomcat8, a servlet and JSP engine, static error pages used the original request's HTTP method to serve content, instead of systematically using the GET method. This could under certain conditions result in undesirable results,

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Debian Security Advisory DSA-3891-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                       Sebastien Delafond
June 22, 2017                         https://www.debian.org/security/faq
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Package        : tomcat8
CVE ID         : CVE-2017-5664
Debian Bug     : 864447 802312

Aniket Nandkishor Kulkarni discovered that in tomcat8, a servlet and
JSP engine, static error pages used the original request's HTTP method
to serve content, instead of systematically using the GET method. This
could under certain conditions result in undesirable results,
including the replacement or removal of the custom error page.

For the oldstable distribution (jessie), this problem has been fixed
in version 8.0.14-1+deb8u10.

For the stable distribution (stretch), this problem has been fixed in
version 8.5.14-1+deb9u1.

For the testing distribution (buster), this problem has been fixed
in version 8.5.14-2.

For the unstable distribution (sid), this problem has been fixed in
version 8.5.14-2.

We recommend that you upgrade your tomcat8 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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