CVE-2021-32791
Published: 26 July 2021
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.
Priority
Status
Package | Release | Status |
---|---|---|
libapache2-mod-auth-openidc Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
focal |
Needs triage
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Not vulnerable
(2.4.9-1)
|
|
jammy |
Not vulnerable
(2.4.9-1)
|
|
kinetic |
Not vulnerable
(2.4.9-1)
|
|
lunar |
Not vulnerable
(2.4.9-1)
|
|
mantic |
Not vulnerable
(2.4.9-1)
|
|
noble |
Not vulnerable
(2.4.9-1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(2.4.9-1)
|
|
xenial |
Needs triage
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.9 |
Attack vector | Network |
Attack complexity | High |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
References
- https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-px3c-6x7j-3r9r
- https://github.com/zmartzone/mod_auth_openidc/commit/375407c16c61a70b56fdbe13b0d2c8f11398e92c (v2.4.9)
- https://github.com/zmartzone/mod_auth_openidc/commit/375407c16c61a70b56fdbe13b0d2c8f11398e92c
- https://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9
- https://www.cve.org/CVERecord?id=CVE-2021-32791
- NVD
- Launchpad
- Debian