Bug 1227769 (CVE-2024-39917)

Summary: VUL-0: CVE-2024-39917: xrdp: attackers can make an infinite number of login attempts despite configuration parameter MaxLoginRetry
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: Daike Yu <yu.daike>
Status: NEW --- QA Contact: Security Team bot <security-team>
Severity: Major    
Priority: P3 - Medium CC: andrea.mattiazzo
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/413983/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-39917:7.3:(AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-07-15 09:04:32 UTC
xrdp is an open source RDP server. xrdp versions prior to 0.10.0 have a vulnerability that allows attackers to make an infinite number of login attempts. The number of max login attempts is supposed to be  limited by a configuration parameter `MaxLoginRetry` in `/etc/xrdp/sesman.ini`. However, this mechanism was not effectively working. As a result, xrdp allows an infinite number of login attempts.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-39917
https://www.cve.org/CVERecord?id=CVE-2024-39917
https://github.com/neutrinolabs/xrdp/commit/19c111c74c913ecc6e4ba9a738ed929a79d2ae8f
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-7w22-h4w7-8j5j