Medium severity5.9NVD Advisory· Published Jul 26, 2021· Updated Jun 17, 2026
CVE-2021-32791
CVE-2021-32791
Description
mod_auth_openidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. In mod_auth_openidc before version 2.4.9, the AES GCM encryption in mod_auth_openidc uses a static IV and AAD. It is important to fix because this creates a static nonce and since aes-gcm is a stream cipher, this can lead to known cryptographic issues, since the same key is being reused. From 2.4.9 onwards this has been patched to use dynamic values through usage of cjose AES encryption routines.
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Affected products
14- Range: <2.4.9
- osv-coords12 versionspkg:rpm/almalinux/cjosepkg:rpm/almalinux/cjose-develpkg:rpm/almalinux/mod_auth_openidcpkg:rpm/opensuse/apache2-mod_auth_openidc&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/apache2-mod_auth_openidc&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/apache2-mod_auth_openidc&distro=openSUSE%20Leap%2015.6pkg:rpm/suse/apache2-mod_auth_openidc&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/apache2-mod_auth_openidc&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/apache2-mod_auth_openidc&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP6pkg:rpm/suse/apache2-mod_auth_openidc&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP7pkg:rpm/suse/apache2-mod_auth_openidc&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/apache2-mod_auth_openidc&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5
< 0.6.1-2.module_el8.6.0+2868+44838709+ 11 more
- (no CPE)range: < 0.6.1-2.module_el8.6.0+2868+44838709
- (no CPE)range: < 0.6.1-2.module_el8.6.0+2868+44838709
- (no CPE)range: < 2.3.7-11.module_el8.6.0+2868+44838709
- (no CPE)range: < 2.3.8-lp152.5.6.1
- (no CPE)range: < 2.3.8-3.15.1
- (no CPE)range: < 2.4.17.1-150600.16.14.1
- (no CPE)range: < 2.3.8-3.15.1
- (no CPE)range: < 2.3.8-3.15.1
- (no CPE)range: < 2.4.17.1-150600.16.14.1
- (no CPE)range: < 2.4.17.1-150600.16.14.1
- (no CPE)range: < 2.4.0-3.23.1
- (no CPE)range: < 2.4.0-3.23.1
- Range: < 2.4.9
Patches
Vulnerability mechanics
References
7- github.com/zmartzone/mod_auth_openidc/commit/375407c16c61a70b56fdbe13b0d2c8f11398e92cnvdPatchThird Party Advisory
- github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-px3c-6x7j-3r9rnvdPatchThird Party Advisory
- www.oracle.com/security-alerts/cpuapr2022.htmlnvdPatchThird Party Advisory
- github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9nvdRelease NotesThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/04/msg00034.htmlnvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZVF6BSJLRQZ7PFFR4X5JSU6KUJYNOCU/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QXAWKPT5LXZSUTFSJ6IWSZC7RMYYQXQD/nvd
News mentions
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