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OpenTTD Error Number Handling Denial of Service
Secunia Advisory: SA19768
Release Date: 2006-04-24
Last Update: 2006-04-26
Popularity: 5,923 views

Critical:
Moderately critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:OpenTTD 0.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Luigi Auriemma has reported a vulnerability in OpenTTD, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the handling of error numbers received in PACKET_SERVER_ERROR and PACKET_CLIENT_ERROR command packets. This can be exploited to cause the server to terminate via an invalid error number sent by a malicious client.

Successful exploitation requires that the attacker has not been banned from the server.

Note: It has also been reported that an error exists in the client within the handling of the packet size field in a received UDP. This can cause the client to return immediately to the main menu via replies sent from a malicious server.

The vulnerability has been reported in version 0.4.7. Prior versions may also be affected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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