CVE-2022-41877
Description
An out-of-bounds read vulnerability was discovered in FreeRDP due to improper input length validation in the drive channel. A malicious server can trick a FreeRDP based client to read out-of-bound data and send it back to the server.
Mitigation
Do not use the drive redirection channel - command line options /drive, +drives or +home-drive.
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 | 3.7 | 4.6 | N/A |
| Attack Vector | Network | Network | N/A |
| Attack Complexity | High | Low | N/A |
| Privileges Required | Low | Low | N/A |
| User Interaction | Required | Required | N/A |
| Scope | Unchanged | Unchanged | N/A |
| Confidentiality | Low | Low | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | Low | Low | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
NVD: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Red Hat CVSS v3 Score Explanation
AC:H, An attacker must have control of an RDP server to which the victim/client connects.
Acknowledgements
Upstream acknowledges Team BT5 (BoB 11th) as the original reporter.
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