A libapache2-mod-auth-openidc security update has been released for Debian GNU/Linux 9 LTS to address several issues in the the OpenID Connect authentication module for the Apache HTTP server.

DLA 2298-1: libapache2-mod-auth-openidc security update

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Debian LTS Advisory DLA-2298-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
July 29, 2020   https://wiki.debian.org/LTS
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Package : libapache2-mod-auth-openidc
Version : 2.1.6-1+deb9u1
CVE ID : CVE-2019-14857 CVE-2019-20479 CVE-2019-1010247

Several issues have been found in libapache2-mod-auth-openidc, the OpenID
Connect authentication module for the Apache HTTP server.

CVE-2019-14857

Insufficient validation of URLs leads to an Open Redirect
vulnerability. An attacker may trick a victim into providing
credentials for an OpenID provider by forwarding the request to an
illegitimate website.

CVE-2019-20479

Due to insufficient validatation of URLs an Open Redirect
vulnerability for URLs beginning with a slash and backslash could be
abused.

CVE-2019-1010247

The OIDCRedirectURI page contains generated JavaScript code that uses
a poll parameter as a string variable, thus might contain additional
JavaScript code. This might result in Criss-Site Scripting (XSS).

For Debian 9 stretch, these problems have been fixed in version
2.1.6-1+deb9u1.

We recommend that you upgrade your libapache2-mod-auth-openidc packages.

For the detailed security status of libapache2-mod-auth-openidc please
refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/libapache2-mod-auth-openidc

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