CVE-2021-32791
Apache mod_auth_openidc AES Static IV/Vulnerable via Static AAD and Reused Key
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.
INFO
Published Date :
July 26, 2021, 5:15 p.m.
Last Modified :
Nov. 7, 2023, 3:35 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
Affected Products
The following products are affected by CVE-2021-32791
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-32791.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-32791 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-32791 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZVF6BSJLRQZ7PFFR4X5JSU6KUJYNOCU/ [No types assigned] Added Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QXAWKPT5LXZSUTFSJ6IWSZC7RMYYQXQD/ [No types assigned] Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/QXAWKPT5LXZSUTFSJ6IWSZC7RMYYQXQD/ Removed Reference GitHub, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/FZVF6BSJLRQZ7PFFR4X5JSU6KUJYNOCU/ -
CPE Deprecation Remap by [email protected]
May. 25, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:zmartzone:mod_auth_openidc:*:*:*:*:*:*:*:* versions from (excluding) 2.4.9 OR *cpe:2.3:a:openidc:mod_auth_openidc:*:*:*:*:*:*:*:* versions from (excluding) 2.4.9 -
CVE Modified by [email protected]
Apr. 30, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/04/msg00034.html [No Types Assigned] -
Reanalysis by [email protected]
Oct. 25, 2022
Action Type Old Value New Value -
Modified Analysis by [email protected]
May. 10, 2022
Action Type Old Value New Value Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory -
CVE Modified by [email protected]
Apr. 20, 2022
Action Type Old Value New Value Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned] -
Modified Analysis by [email protected]
Aug. 09, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FZVF6BSJLRQZ7PFFR4X5JSU6KUJYNOCU/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FZVF6BSJLRQZ7PFFR4X5JSU6KUJYNOCU/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/QXAWKPT5LXZSUTFSJ6IWSZC7RMYYQXQD/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/QXAWKPT5LXZSUTFSJ6IWSZC7RMYYQXQD/ Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 08, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/QXAWKPT5LXZSUTFSJ6IWSZC7RMYYQXQD/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FZVF6BSJLRQZ7PFFR4X5JSU6KUJYNOCU/ [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 04, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/zmartzone/mod_auth_openidc/commit/375407c16c61a70b56fdbe13b0d2c8f11398e92c No Types Assigned https://github.com/zmartzone/mod_auth_openidc/commit/375407c16c61a70b56fdbe13b0d2c8f11398e92c Patch, Third Party Advisory Changed Reference Type https://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9 No Types Assigned https://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9 Release Notes, Third Party Advisory Changed Reference Type https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-px3c-6x7j-3r9r No Types Assigned https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-px3c-6x7j-3r9r Patch, Third Party Advisory Added CWE NIST CWE-330 Added CPE Configuration AND OR *cpe:2.3:a:zmartzone:mod_auth_openidc:*:*:*:*:*:*:*:* versions up to (excluding) 2.4.9 OR cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (including) 2.4.48
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-32791 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-32791
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.22 }} 0.03%
score
0.59444
percentile