RHSA-2022:1823 - Security Advisory

Topic

An update for the mod_auth_openidc:2.3 module is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The mod_auth_openidc is an OpenID Connect authentication module for Apache HTTP Server. It enables an Apache HTTP Server to operate as an OpenID Connect Relying Party and/or OAuth 2.0 Resource Server.

Security Fix(es):

• mod_auth_openidc: open redirect in oidc_validate_redirect_url() (CVE-2021-32786)
• mod_auth_openidc: hardcoded static IV and AAD with a reused key in AES GCM encryption (CVE-2021-32791)
• mod_auth_openidc: XSS when using OIDCPreservePost On (CVE-2021-32792)
• mod_auth_openidc: open redirect due to target_link_uri parameter not validated (CVE-2021-39191)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• BZ - 1986102 - CVE-2021-32786 mod_auth_openidc: open redirect in oidc_validate_redirect_url()
• BZ - 1986395 - CVE-2021-32791 mod_auth_openidc: hardcoded static IV and AAD with a reused key in AES GCM encryption
• BZ - 1986397 - CVE-2021-32792 mod_auth_openidc: XSS when using OIDCPreservePost On
• BZ - 2001646 - CVE-2021-39191 mod_auth_openidc: open redirect due to target_link_uri parameter not validated

CVEs

• CVE-2021-32786
• CVE-2021-32791
• CVE-2021-32792
• CVE-2021-39191

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.6_release_notes/