Provided by Aanval (Snort & Syslog Intrusion Detection and Correlation Engine) www.aanval.com
--
GEN:SID | 1:1226 |
Message | X11 xopen |
Summary | This event is generated when an attempt to launch an X windows application on an X windows server is made. |
Impact | Possible theft of data and control of the targeted machine leading to a compromise of all resources the machine is connected to. |
Detailed Information | Implementations of the X windows system from the X consortium may use weak authentication methods when allowing remote machines to connect to a host running X windows. XDM is used to allow remote users access to the remote X window server. When configured incorrectly, this may allow an unathorised user to connect to the display. This event is generated when a user outside the protected network opens an X windows application on the remote X server. |
Affected Systems | |
Attack Scenarios | The remote attacker may scan the host for listening X window servers, then connect to the remote host using XDM. The attacker may then execute an X windows application on the remote host. |
Ease of Attack | Simple. |
Corrective Action | Disallow connections to X servers from hosts outside the protected network. Apply the appropriate vendor patches. Upgrade to the latest version of the software. |
Additional References | Whitehats arachNIDS http://www.whitehats.com/info/IDS396 |
Rule References | arachnids: 395 |
--
DID:331189
--
http://www.aanval.com/