A httpcomponents-client security update has been released for Debian GNU/Linux 9 LTS to address an issue where a malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.

DLA 2405-1: httpcomponents-client security update

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Debian LTS Advisory DLA-2405-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Markus Koschany
October 10, 2020   https://wiki.debian.org/LTS
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Package : httpcomponents-client
Version : 4.5.2-2+deb9u1
CVE ID : CVE-2020-13956

Oleg Kalnichevski discovered that httpcomponents-client, a Java library
for building HTTP-aware applications, can misinterpret a malformed
authority component in request URIs passed to the library as
java.net.URI object and pick the wrong target host for request
execution.

For Debian 9 stretch, this problem has been fixed in version
4.5.2-2+deb9u1.

We recommend that you upgrade your httpcomponents-client packages.

For the detailed security status of httpcomponents-client please refer
to its security tracker page at:
  https://security-tracker.debian.org/tracker/httpcomponents-client

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