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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/source-package/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