Auth bypass in Freerdp
CVE-2022-24883
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP). Prior to version 2.7.0, server side authentication against a `SAM` file might be successful for invalid credentials if the server has configured an invalid `SAM` file path. FreeRDP based clients are not affected. RDP server implementations using FreeRDP to authenticate against a `SAM` file are affected. Version 2.7.0 contains a fix for this issue. As a workaround, use custom authentication via `HashCallback` and/or ensure the `SAM` database path configured is valid and the application has file handles left.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.024 (83.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.024 · change: +0.000
Affected products
- Freerdp — versions < 2.7.0
- Fedoraproject Fedora — versions 34, 35, 36
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qxm3-v2r6-vmwf (Patch, Third Party Advisory)
- github.com/FreeRDP/FreeRDP/commit/4661492e5a617199457c8074bad22f766a116cdc (Patch, Third Party Advisory)
- github.com/FreeRDP/FreeRDP/commit/6f473b273a4b6f0cb6aca32b95e22fd0de88e144 (Patch, Third Party Advisory)
- github.com/FreeRDP/FreeRDP/releases/tag/2.7.0 (Third Party Advisory, Release Notes)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202210-24 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/11/msg00010.html (mailing-list)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-24883?
- CVE-2022-24883 is a high-severity vulnerability in Freerdp, classified under Improper Authentication. CVSS score: 7.4/10. Published 2022-04-26.
- How severe is CVE-2022-24883?
- High severity. CVSS v3 base score is 7.4 out of 10.