Auth bypass in Freerdp
CVE-2022-24882
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP). In versions prior to 2.7.0, NT LAN Manager (NTLM) authentication does not properly abort when someone provides and empty password value. This issue affects FreeRDP based RDP Server implementations. RDP clients are not affected. The vulnerability is patched in FreeRDP 2.7.0. There are currently no known workarounds.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.028 (86.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Freerdp — versions < 2.7.0
- Fedoraproject Extra Packages For Enterprise Linux — versions 8.0
- Fedoraproject Fedora — versions 34, 35, 36
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FreeRDP/FreeRDP/releases/tag/2.7.0 (Third Party Advisory, Release Notes)
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-6x5p-gp49-3jhh (Third Party Advisory)
- github.com/FreeRDP/FreeRDP/pull/7750 (Patch, Third Party Advisory)
- gitlab.gnome.org/GNOME/gnome-remote-desktop/-/issues/95 (Exploit, Third Party Advisory, Issue Tracking)
- 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)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-24882?
- CVE-2022-24882 is a critical-severity vulnerability in Freerdp, classified under Improper Authentication. CVSS score: 9.1/10. Published 2022-04-26.
- How severe is CVE-2022-24882?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2022-24882 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.