Insecure Randomness Affecting zmartzone/mod_auth_openidc package, versions [,2.4.9)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.21% (60th percentile)

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  • Snyk IDSNYK-UNMANAGED-ZMARTZONEMODAUTHOPENIDC-2365000
  • published12 Jan 2022
  • disclosed26 Jul 2021
  • creditUnknown

Introduced: 26 Jul 2021

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

How to fix?

Upgrade zmartzone/mod_auth_openidc to version 2.4.9 or higher.

Overview

Affected versions of this package are vulnerable to Insecure Randomness 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 Scores

version 3.1