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Insecure Library Loading
Highly critical

OpenTTD Format String and Buffer Overflow Vulnerabilities

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Release Date:  2005-09-06    Last Update:  2006-02-01    Views:  9,109

Secunia Advisory SA16696

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Some vulnerabilities have been reported in OpenTTD, which can be exploited by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) Some format string error in the handling of network text messages in network_server.c, network.c, console_cmds.c, and network_client.c can be exploited to crash the OpenTTD server or client and potentially to execute arbitrary code.

2) Some boundary errors due to the unsafe use of "vsprintf()" may be exploited to cause a DoS and potentially to execute arbitrary code.

Vulnerabilities #1 and #2 have been reported in version 0.4.0.1. Other versions may also be affected.

3) An input validation error exists in the "CmdPlantTree()" function in tree_cmd.c when handling the tree-planting command. This may be exploited to cause a buffer overflow.


Solution:
Update to version 0.4.5.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1-2) Alexey Dobriyan
3) Reported by vendor

Original Advisory:
http://www.tt-forums.net/viewtopic.php?p=400836
http://svn.openttd.org/cgi-bin/trac.cgi/changeset/2899
http://svn.openttd.org/cgi-bin/trac.cgi/changeset/3446

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: OpenTTD Format String and Buffer Overflow Vulnerabilities

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