A libapache2-mod-auth-mellon security update has been released for Debian GNU/Linux 10 LTS to address multiple vulnerabilities.

DLA 3359-1: libapache2-mod-auth-mellon security update

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Debian LTS Advisory DLA-3359-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Utkarsh Gupta
March 13, 2023 https://wiki.debian.org/LTS
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Package : libapache2-mod-auth-mellon
Version : 0.14.2-1+deb10u1
CVE ID : CVE-2019-13038 CVE-2021-3639
Debian Bug : 931265, 991730

libapache2-mod-auth-mellon, a SAML 2.0 authentication module for Apache,
were reported to have the following vulnerabilities.

CVE-2019-13038

mod_auth_mellon had an Open Redirect via the login?ReturnTo= substring,
as demonstrated by omitting the // after http: in the target URL.

CVE-2021-3639

mod_auth_mellon did not sanitize logout URLs properly. This issue could
be used by an attacker to facilitate phishing attacks by tricking users
into visiting a trusted web application URL that redirects to an external
and potentially malicious server.

For Debian 10 buster, these problems have been fixed in version
0.14.2-1+deb10u1.

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

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

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