Reusing a Nonce Affecting mod_auth_openidc package, versions <0:2.3.7-11.module+el8.6.0+20572+b6f23e95


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.7% (71st percentile)

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  • Snyk IDSNYK-ORACLE8-MODAUTHOPENIDC-2832707
  • published18 May 2022
  • disclosed26 Jul 2021

Introduced: 26 Jul 2021

CVE-2021-32791  (opens in a new tab)
CWE-323  (opens in a new tab)
CWE-330  (opens in a new tab)

How to fix?

Upgrade Oracle:8 mod_auth_openidc to version 0:2.3.7-11.module+el8.6.0+20572+b6f23e95 or higher.
This issue was patched in ELSA-2022-1823.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_auth_openidc package and not the mod_auth_openidc package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1