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Debian LTS Advisory DLA-3499-1                [email protected]
https://www.debian.org/lts/security/                       Guilhem Moulin
July 19, 2023                                 https://wiki.debian.org/LTS
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Package        : libapache2-mod-auth-openidc
Version        : 2.3.10.2-1+deb10u3
CVE ID         : CVE-2021-39191 CVE-2022-23527
Debian Bug     : 993648 1026444

Open Redirect vulnerabilities were found in libapache2-mod-auth-openidc,
OpenID Connect Relying Party implementation for Apache, which could lead
to information disclosure via phishing attacks.

CVE-2021-39191

    The 3rd-party init SSO functionality of mod_auth_openidc was
    reported to be vulnerable to an open redirect attack by supplying a
    crafted URL in the target_link_uri parameter.

CVE-2022-23527

    When providing a logout parameter to the redirect URI,
    mod_auth_openidc failed to properly check for URLs starting with
    "/\t", leading to an open redirect.

For Debian 10 buster, these problems have been fixed in version
2.3.10.2-1+deb10u3.

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