Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-32785 | First vendor Publication | 2021-07-22 |
| Vendor | Cve | Last vendor Modification | 2022-05-10 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.5 | ||
| Base Score | 7.5 | Environmental Score | 7.5 |
| impact SubScore | 3.6 | Temporal Score | 7.5 |
| Exploitabality Sub Score | 3.9 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | None |
| Integrity Impact | None | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 4.3 | Attack Range | Network |
| Cvss Impact Score | 2.9 | Attack Complexity | Medium |
| Cvss Expoit Score | 8.6 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| 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. When mod_auth_openidc versions prior to 2.4.9 are configured to use an unencrypted Redis cache (`OIDCCacheEncrypt off`, `OIDCSessionType server-cache`, `OIDCCacheType redis`), `mod_auth_openidc` wrongly performed argument interpolation before passing Redis requests to `hiredis`, which would perform it again and lead to an uncontrolled format string bug. Initial assessment shows that this bug does not appear to allow gaining arbitrary code execution, but can reliably provoke a denial of service by repeatedly crashing the Apache workers. This bug has been corrected in version 2.4.9 by performing argument interpolation only once, using the `hiredis` API. As a workaround, this vulnerability can be mitigated by setting `OIDCCacheEncrypt` to `on`, as cache keys are cryptographically hashed before use when this option is enabled. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32785 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-134 | Uncontrolled Format String (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2022-05-11 00:23:08 |
|
| 2022-04-20 09:23:15 |
|
| 2021-10-18 17:23:05 |
|
| 2021-09-02 13:23:00 |
|
| 2021-08-04 21:23:14 |
|
| 2021-07-23 21:23:11 |
|
| 2021-07-23 05:22:47 |
|
