unauthorized VNC access in AK-Systems Windows Terminals

2006-08-24 / 2006-08-25

Credit: Victor Sudakov

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2006-4309

CWE: CWE-Other

Ogólna skala CVSS: 10/10

Znaczenie: 10/10

Łatwość wykorzystania: 10/10

Wymagany dostęp: Zdalny

Złożoność ataku: Niska

Autoryzacja: Nie wymagana

Wpływ na poufność: Pełny

Wpływ na integralność: Pełny

Wpływ na dostępność: Pełny

WinCE-based Windows Terminals (thin clients) manufactured by
AK-Systems (http://www.ak-systems.ru/) with firmware version 1.2.5 ExVLP
feature a VNC server for remote administration and setup. The VNC
access is not protected by password, so anyone with a VNC client can
connect to the terminal and watch the user's RDP/Citrix session, or even
meddle into it.

Workaround suggested by vendor: older firmware without VNC support
should be installed on the terminal.

-- 
Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
sip:sudakov (at) sibptus.tomsk (dot) ru [email concealed]

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unauthorized VNC access in AK-Systems Windows Terminals

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