CVE-2022-0866
Description
A flaw was found in Wildfly, where it returns an incorrect caller principal under certain heavily concurrent situations when Elytron Security is used. This flaw allows an attacker to gain improper access to information they should not have.
Statement
JBoss EAP 7.1 until 7.4 is not affected by default as it comes with Legacy Security enabled out-of-the-box. This only affects application scope range and the methods mentioned, no access to server data.
Mitigation
In order to avoid the possibility of information access, review application source code for '@RunAs' and 'run-as-principal' usage. Also, make sure the application is using or not Elytron Security. It's possible to investigate by checking if the commands from '$JBOSS_HOME/docs/examples/enable-elytron.cli' or similar were executed.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 3.1 | 5.3 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | High | Low | N/A |
| Privileges Required | Low | None | N/A |
| User Interaction | None | None | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | Low | Low | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | None | None | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Understanding the Weakness (CWE)
Integrity,Confidentiality
Technical Impact: Modify Application Data; Read Application Data
Acknowledgements
Red Hat would like to thank Oliver Bieri (Schindler Elevator Ltd., Switzerland) for reporting this issue.
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